Ulrich Rothbauer
Feb 1, 2008; 7:282-289
Research

HIV Type 1 (HIV-1) and simian immunodeficiency virus (SIV) display differential replication kinetics in macrophages. This is because high expression levels of the active host deoxynucleotide triphosphohydrolase sterile α motif domain and histidine-aspartate domain–containing protein 1 (SAMHD1) deplete intracellular dNTPs, which restrict HIV-1 reverse transcription, and result in a restrictive infection in this myeloid cell type. Some SIVs overcome SAMHD1 restriction using viral protein X (Vpx), a viral accessory protein that induces proteasomal degradation of SAMHD1, increasing cellular dNTP concentrations and enabling efficient proviral DNA synthesis. We previously reported that SAMHD1-noncounteracting lentiviruses may have evolved to harbor RT proteins that efficiently polymerize DNA, even at low dNTP concentrations, to circumvent SAMHD1 restriction. Here we investigated whether RTs from SIVmac239 virus lacking a Vpx protein evolve during in vivo infection to more efficiently synthesize DNA at the low dNTP concentrations found in macrophages. Sequence analysis of RTs cloned from Vpx (+) and Vpx (−) SIVmac239–infected animals revealed that Vpx (−) RTs contained more extensive mutations than Vpx (+) RTs. Although the amino acid substitutions were dispersed indiscriminately across the protein, steady-state and pre-steady-state analysis demonstrated that selected SIVmac239 Vpx (−) RTs are characterized by higher catalytic efficiency and incorporation efficiency values than RTs cloned from SIVmac239 Vpx (+) infections. Overall, this study supports the possibility that the loss of Vpx may generate in vivo SIVmac239 RT variants that can counteract the limited availability of dNTP substrate in macrophages.

The UK must avoid conflict with Europe and China Expert comment NCapeling 10 October 2022

Liz Truss says she wants to take a tough line but any freedom to forge her own foreign policy is a casualty of the economic turmoil following her first budget.

The tax-cutting budget from new UK chancellor Kwasi Kwarteng was clearly not inhibited by any apparent concern for the markets’ response. But the interest rate rise it contributed to and the scepticism raining down on the Truss government should force a recognition that economic vulnerability now constrains what the UK tries to do abroad.

That would mean taking a more cautious approach than the new UK prime minister seems to want to adopt. The Treasury and the Foreign, Commonwealth and Development Office (FCDO) may sit next to each other in Whitehall’s parade of 18th century buildings, but a huge gulf lies between them.

When talking to officials, it is striking how those in one building make decisions without reference to the other. Foreign policy is made with no consideration of the UK’s need to borrow money in the markets, and budgets are written with little calculation of the effect of decisions next door – although the Cabinet Office does at least try to reconcile these.

But that approach is a luxury which the budget response and the sharp rise in national debt it will bring makes no longer affordable.

Repairing EU trade relations is priority

The first lesson is that any worsening of trade relations with the European Union (EU) is not now something the UK can afford to contemplate. The markets would take an even dimmer view of national finances if the UK were to become embroiled in an even more fractious trade dispute with its closest and largest trading partner.

When campaigning for the Conservative party leadership, Liz Truss talked tough on the Northern Ireland protocol and her unwillingness to compromise much with the EU. Since she became prime minister, sounds from both the UK and EU have been much more conciliatory, with suggestions that a deal could be just a few details away.

And yet the Truss government is still pressing ahead with the controversial legislation which would enable the UK unilaterally to walk away from parts of the treaty it signed – the House of Lords will debate the bill and its most contentious measures, such as the extensive new powers it gives ministers, on 11 October.

But there are suggestions from officials that, although Truss would lose too much face by withdrawing the legislation, the government may choose not to contest any Lords amendments vigorously.

That would be wise. The prime minister should know the financial path she has chosen with her chancellor makes carrying out the threats of walking away from a deal too costly to afford. As it is, the markets are hardly looking with equanimity on the prospect of the UK borrowing £100 billion to shield consumers from rising gas prices.

A £43 billion package of proposed tax cuts with no explanation – yet – of how the government will pay for them would be even less comfortable were the UK to take such a hard line on the Northern Ireland protocol that it provokes a trade war with the EU. Brussels can also make those calculations and, for all the recent talk of concessions, is expected to hold fast to its new position.

For the same reasons, the UK cannot afford to talk about taking a tougher line on China – as the prime minister has already done – without clearly knowing what the economic impact would be and being sure voters are prepared to pay this price. Years of courting commercial links with China mean they now weave their way through the UK economy.

The dependence of universities on Chinese students and the income they bring is already well-known and heavily debated – but the exposure of the UK economy to digital technology and components from China is even greater, and China is now the largest source of imports for the UK with £63.6 billion or 13.3 per cent of all goods imports according to the Office for National Statistics.

Much of that was laptops, computers, telecoms and phones as well as toys and clothes; there are few households or offices that will not have these products. China is also the sixth largest destination for UK exports, with £18.8 billion or 5.8 per cent of goods exports, much of it machinery and cars.

Scottish Liberal Democrat peer Lord Purvis expressed concern at these figures because of the implication that the UK’s ability to take a tough line with China on human rights was now enormously circumscribed. And defence and intelligence chiefs are also warning of the UK’s vulnerability.

Taking a hard line needs context

There are signs the government is concerned enough to begin to map out this economic vulnerability but no signs that it yet has a full picture. Without knowing the economic hit of a frostier relationship, and confidence the House of Commons accepts it, Liz Truss would be brave to label China ‘a threat to national security’ – as her supporters indicated during the leadership campaign – when she updates the integrated review of defence and security in the coming months.

Of course, foreign policy should not be inspired by commercial concerns alone. There are wider reasons to develop a clearer China strategy to help lay out a more consistent future path. On his recent trip to East Asia, UK foreign secretary James Cleverly heard from UK partners that they were disconcerted by the lurch from George Osborne’s ‘golden years’ to the Truss charge of a China ‘threat’.

When Liz Truss was UK foreign secretary, some forecast she would pursue mercantilism given her focus on forging post-Brexit trade deals but, as it turned out, that was not the spirit of her tenure.

Accumulation of the microtubule-associated protein tau is associated with Alzheimer's disease (AD). In AD brain, tau is abnormally phosphorylated at many sites, and phosphorylation at Ser-262 and Ser-356 plays critical roles in tau accumulation and toxicity. Microtubule affinity–regulating kinase 4 (MARK4) phosphorylates tau at those sites, and a double de novo mutation in the linker region of MARK4, ΔG316E317D, is associated with an elevated risk of AD. However, it remains unclear how this mutation affects phosphorylation, aggregation, and accumulation of tau and tau-induced neurodegeneration. Here, we report that MARK4ΔG316E317D increases the abundance of highly phosphorylated, insoluble tau species and exacerbates neurodegeneration via Ser-262/356–dependent and –independent mechanisms. Using transgenic Drosophila expressing human MARK4 (MARK4wt) or a mutant version of MARK4 (MARK4ΔG316E317D), we found that coexpression of MARK4wt and MARK4ΔG316E317D increased total tau levels and enhanced tau-induced neurodegeneration and that MARK4ΔG316E317D had more potent effects than MARK4wt. Interestingly, the in vitro kinase activities of MARK4wt and MARK4ΔG316E317D were similar. When tau phosphorylation at Ser-262 and Ser-356 was blocked by alanine substitutions, MARK4wt did not promote tau accumulation or exacerbate neurodegeneration, whereas coexpression of MARK4ΔG316E317D did. Both MARK4wt and MARK4ΔG316E317D increased the levels of oligomeric forms of tau; however, only MARK4ΔG316E317D further increased the detergent insolubility of tau in vivo. Together, these findings suggest that MARK4ΔG316E317D increases tau levels and exacerbates tau toxicity via a novel gain-of-function mechanism and that modification in this region of MARK4 may affect disease pathogenesis.

In conversation with the Rt Hon Anneliese Dodds 17 October 2024 — 1:00PM TO 2:00PM Anonymous (not verified) 10 October 2024 Chatham House and Online

The Minister of State for Development discusses the new government’s international development priorities.

Following its election victory in July 2024, the new government has set out an ambition to reset its relationships with countries in the Global South. Its stated mission is to modernise the UK’s approach to international development, helping to create ‘a world free from poverty on a liveable planet’.

Where can the UK make a meaningful difference in a more volatile and insecure world? The government is looking to address priorities including unsustainable debt, empowering women and girls, conflict prevention, and unlocking climate finance. But it does this with a much-reduced Official Development Assistance budget, in a world where progress to meet the UN’s Sustainable Development Goals is off track. And while the UK has been debating its own approach to development, the landscape has been changing, with non-allied states vying for influence in the Global South, and developing countries themselves becoming more vocal on climate, debt, and global institutional reform. What kind of role can the government set out for the UK in this context?

In this discussion, the Rt Hon Anneliese Dodds, Minister of State for Development in the Foreign, Commonwealth and Development Office, will lay out her priorities for meeting international development goals over the coming parliament.

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The US election could create the need for a G7 alternative – without American representation Expert comment jon.wallace 15 October 2024

Traditional allies of the US need to find a way to work together on some global policy issues even when the US itself is not engaged. A ‘G6 plus’ group could provide an answer.

When Jamaica pulled out of the nascent West Indies Federation in 1961, Trinidad and Tobago’s then prime minister, Dr Eric Williams, famously said ‘One from ten leaves nought’. In the run up to the US elections on 5 November, the US’s longstanding allies need to ask themselves if the same logic must apply to the G7. 

A Donald Trump victory will result in stark differences between the US and its closest partners on key global economic issues. US allies would no doubt try and persuade the new president to moderate his position, but experience suggests that this will have little, if any, effect.  

They may then want to work around the US, or on a parallel track. But doing so will be very hard unless they have a framework for discussing and developing ideas collectively. Could some form of ‘G6 plus’ forum help?

The role of the G7 today

The G7 no longer acts as a steering group for the global economy. However, it remains a critical forum for the US and its allies to coordinate their efforts to help solve global problems, to defend common Western interests, to resolve internal disputes and to underpin information exchange. 

In the past two years, the G7 has come to be seen by the US and other members as one of the most effective international mechanisms. It has played a critical role coordinating Western efforts to recover from the last pandemic and prepare for future ones.  

It has been pivotal in weakening Russia’s economy following the attack on Ukraine and has acted to strengthen Western economic security and resilience more broadly.  

The G7 has also responded to ‘Global South’ calls for help in dealing with the pandemic aftermath and the Ukraine war. 

Trump’s approach to the G7

The problem is that the G7’s effectiveness depends critically on full US engagement, sometimes as a leader of initiatives (such as the decision to impose an ‘oil price cap’ on Russia in autumn 2022) or as an essential partner. 

If elected, former President Trump is likely to abandon the G7 as an instrument of international economic policy. This is effectively what happened during his first presidency and there are reasons to expect this to be repeated. 

Many of Trump’s international economic policies are highly controversial with US allies, including his apparent determination to withdraw from the Paris Agreement, impose across the board 10-20 per cent tariffs and even punish countries for not using the dollar. His domestic policies, including mass deportation of undocumented immigrants and aggressive deregulation and fiscal easing could lead to further sharp disagreements.  

Furthermore, Trump demonstrates general antipathy towards multilateralism. Under his presidency, US representatives in the G7 and G20 sought to weaken core values and policies that have underpinned international economic cooperation for decades – including the importance of a rules based international system, the IMF’s global safety net role, and the responsibility of the advanced world to assist the poorest countries financially.  

Other G7 and G20 countries tried to preserve as much as possible of the previous consensus. But in the case of climate change, the only solution was to have a separate text for the US. Critically, such efforts diverted time and attention from the enormous challenges facing the world at the time. 

Trump went through four different G7/G20 Sherpas during his presidency and disowned the final declaration of the 2018 Canadian G7 summit after hundreds of hours of negotiation, and despite previously signing off on the text. The US failed to host a final leaders’ summit, even virtually, during his administration’s G7 presidency.  

Of course, how far Trump carries through his most radical policies will depend, among other things, on the outcome of the Congressional elections and the stance taken by US courts. 

He may also have second thoughts if elected. His first administration sometimes supported significant multilateral economic initiatives, notably the G20’s Debt Service Suspension Initiative and ‘Common Framework’ for debt rescheduling. 

But, in the event of a second Trump administration, the most likely scenario for the G7 is a repeat of the paralysis of 2017-20, which would be even more costly today.

Should Vice President Kamala Harris win on 5 November, the situation should in theory be very different. She will likely continue with President Joe Biden’s collaborative approach to the G7.

Nonetheless, major issues may still arise where America’s allies want to take a fundamentally different approach and need a mechanism to do so. These could include policy on the WTO, de-risking the economic relationship with China, restricting carbon leakage, and regulating US-dominated big tech.  

How should US allies respond?

No US ally will want to be seen to be leading development of a new ‘G6’ that excludes the US. The top priority will be securing the best possible relationship with the incoming president. Political weakness and/or new governments in France, Germany, the UK and Japan will add to this hesitancy.

Any new forum will therefore need to be as low profile as possible. The concept should initially be discussed in private by sherpas from each participating country. Once established, officials should as far as possible meet online. Leaders should only meet online, at least initially.  

Participants should be fully transparent about the forum’s existence and avoid any grand ‘framing’ along the lines of the EU’s ‘strategic autonomy’. Instead, it should be described as a practical, largely technocratic forum intended to coordinate activity among Western economic powers in those areas where the US chooses not to engage. A suitably innocuous name – such as the ‘the sustainable growth club’ could help.

Topics should be limited to those requiring urgent collective global action, such as climate, health, tech governance, development finance and trade – and where the US federal government is not an ‘essential’ partner. Such a forum should not therefore address defence.  

In conversation with James Manyika, Senior Vice President of Research, Technology and Society at Google 12 December 2024 — 11:15AM TO 12:45PM Anonymous (not verified) 29 October 2024 Chatham House and Online

A conversation on AI’s global, societal and economic impacts.

2024 has been a landmark year for Artificial Intelligence (AI) development, deployment and use, with significant progress in AI-driven science, governance and cooperation. Looking ahead, AI continues to demonstrate economic promise and potential to expand on scientific breakthroughs in areas such as climate and health. This wave of innovation is occurring against a backdrop of geopolitical uncertainty and not all countries are fully able to participate. Heading into 2025, there are urgent questions about how best to maximise shared opportunities when it comes to AI and to advance global cooperation.

James Manyika, Senior Vice President of Research, Technology & Society at Google, will unpack what 2025 will bring for AI in science, economics, global governance and international cooperation. 

Key questions include:

• What will be AI’s global societal and economic impact in 2025 and beyond? 
• What are the ways AI could help increase economic growth and economy-wide productivity? What factors must be in place for this to happen?
• How best can we maximise shared opportunities and advance global cooperation when it comes to AI? Where can public-private partnerships unlock scientific breakthroughs for societal progress, combatting shared global challenges such as climate change and global health issues?  
• What are the principles of safe, responsible AI, and how should companies remain responsive to their evolution and integrate them into technology design and implementation? 
• What is the current – and ideal – role of technology companies in emerging mechanisms for global cooperation and national governance on AI?

This event is being held in partnership with Google.

You will receive notice by 13:00 on Wednesday 11 December if you have been successful in securing an in-person place.

The institute occupies a position of respect and trust, and is committed to fostering inclusive dialogue at all events. Event attendees are expected to uphold this by adhering to our code of conduct.

In conversation with Julien Harneis, UN Assistant Secretary-General 18 November 2024 — 2:30PM TO 3:30PM Anonymous (not verified) 11 November 2024 Chatham House and Online

In this discussion, Julien Harneis will give critical insights into the UN’s humanitarian response in Yemen and the importance of maintaining independent humanitarian assistance.

According to the United Nations, Yemen has faced the world’s worst humanitarian crisis in the last decade, with over 20 million people in need of assistance. Years of ongoing conflict have devastated infrastructure, displaced millions, and caused widespread food insecurity and health emergencies. Access to essential services remains a daily struggle, and the escalating economic collapse has left vulnerable communities facing critical shortages in food, water, and medical supplies.

However, humanitarian actors are continually facing challenges in delivering aid to Yemen due to security threats and supply chain barriers, highlighting the urgent need for coordinated and sustainable international assistance.

UN Assistant Secretary-General and Humanitarian Coordinator for Yemen, Julien Harneis, will provide an account of the humanitarian mission and evolving strategies in Yemen, the impact of regional conflicts in the delivery of aid and discuss other key questions including:

Can Trump do a deal with Putin on Ukraine? Expert comment jon.wallace 12 November 2024

The Kremlin is signalling that it is ready to talk to the incoming US administration. But Trump may find Russia’s terms make him look unacceptably weak.

The nervousness of Ukrainian leadership is understandable. Since Donald Trump’s re-election, Russian President Vladimir Putin has lost no time in preparing the ground for a direct discussion between the US and Russia about the terms for peace in Ukraine – although reports at the weekend that Trump has recently spoken to Putin by phone were swiftly denied by the Kremlin.

Ukrainian President Volodymyr Zelenskyy has made determined efforts in recent months to persuade Trump that Ukraine’s future is worth fighting for. But there is no sign that his messages have brought about a change of heart. 

Trump appears to have no sympathy for Ukraine and no interest in the country – beyond preventing further US commitments to its defence. (Since February 2022, the US has provided $175 billion of economic and military aid to Kyiv, around 7 per cent of total allocated defence spending during that time).

Trump clearly regards Ukraine as an opportunity to demonstrate his power to US voters. If he can bring Putin to the table and end a war that in his view serves no purpose for the American people, it will also boost his claim that he can prevent World War 3.

Seen from Kyiv, the power relationship works in reverse. Putin is drawing Trump – said to be susceptible to flattery – into a negotiation to resolve an issue of great personal importance to him. The Russian president knows the issues in intimate detail, whereas Zelenskyy has genuine reason to fear that Trump might agree to terms whose consequences he does not fully understand.

Putin’s objectives

Putin has not deviated from his goals stated at the start of the full-scale invasion. These are the demilitarization of Ukraine and the replacement of Zelenskyy and his government by a leadership that accepts Moscow’s diktat (‘denazification’).

Putin’s highest priority for talks will be to ensure Ukraine’s neutrality. This will require a firm commitment that Ukraine will not join NATO in the foreseeable future. He will also seek to restrict the size of Ukrainian armed forces and prevent the stationing of foreign troops on Ukrainian territory. 

Putin will also hope to consolidate Russia’s grip on the Crimean peninsula by winning recognition of his annexation of Ukrainian territory. He will likely demand control of those parts of Donetsk and Luhansk Regions not yet occupied by Russian forces, perhaps trading occupied territories in Kherson and Zaporizhzhia for Ukrainian-held territory in Russia’s Kursk Region.

Lastly, Putin will want sanctions relief. The Russian economy has managed to adapt to US sanctions and reduce their effect, but they are a significant burden on the country’s development. 

The loss of access to Western technology and equipment has halted several major industrial products. If sanctions remain in place, such effects will become more pronounced.

Trump might readily agree to these terms. But to do so without evidence of reciprocal flexibility by Putin will expose him to accusations of naivety and weakness as a negotiator. 

Trump could easily brush aside claims that he was outsmarted by Putin. But a charge that he was a weak negotiator would offend his vanity and damage his image in the view of Chinese policymakers – who will be watching closely. 

It is fair to assume that Trump will want to avoid this perception since he has worked hard to create the impression that China, Iran and others should continue to fear him in his second term.

Putin may therefore need to offer the US a sufficiently large incentive – an outcome that will allow both Washington and Moscow to claim an advantageous agreement. It is not clear what Putin could propose that would be affordable to him and satisfy Trump’s America First agenda. 

Ukrainian hopes

Shortly before the election, Trump spoke of the need to ‘un-unite’ Russia and China. The idea that Putin could help Washington by turning away from China is fantastical.

The relationship between Beijing and Moscow is far more complex than it appears on the surface. But the two share the common strategic goal of reducing the global influence of the US and its allies and have established much deeper relations since Trump left office in 2020.

It is also hard to see a new arms control proposal coming from Moscow that would interest Trump. The hope in Kyiv is that Trump will quickly recognize that the deal he would like to strike will not materialize because the underlying and connected issues – such as Russia–China relations – are more complex than he imagines. 

The one consolation for Ukrainians is that the Kremlin was disappointed by Trump during his first term, since despite his friendly signals no major results were achieved. The Trump administration supplied anti-tank weapons to Ukraine and fiercely opposed the building of the Nord Stream 2 gas pipeline connecting Russia and Germany.

Who Trump listens to

While Trump’s approach to negotiating with Moscow is likely to be highly personal and idiosyncratic, the preparation of talks will depend heavily on those he appoints to key positions. At this stage, it is unclear who in the new administration will be responsible for coordinating Russia policy and to what extent they might challenge Trump’s thinking.

W Gamble
Nov 1, 1978; 19:1068-1070
Articles

M. Burstein
Nov 1, 1970; 11:583-595
Articles

William R. Morrison
Oct 1, 1964; 5:600-608
Articles

JE Hixson
Mar 1, 1990; 31:545-548
Articles

New Strategic Partnership with the Robert Bosch Stiftung News Release jon.wallace 23 November 2020

The Robert Bosch Stiftung becomes a founding donor to Chatham House’s second century.

Imagine a World Without Fake News Explainer Video NCapeling 25 February 2021

Harriet Moynihan and Mathieu Boulegue explain how we can avoid drowning in an ocean of fake news and information manipulation.

The flow of fake news is vast and unlikely to go away. What’s more, imagining a world where fake news is eradicated completely has implications for freedom of expression.

But what if, instead of wishing fake news away, we can adapt and become immune to it? 

Chatham House is built on big ideas. Help us imagine a better world.

Our researchers develop positive solutions to global challenges, working with governments, charities, businesses and society to build a better future.

SNF CoLab is our project supported by the Stavros Niarchos Foundation (SNF) to share our ideas in experimental, collaborative ways – and to learn about designing a better future, overcoming challenges such as fake news, COVID-19, food security, and conflict.

Expert

L. Oeding
Trans. Moscow Math. Soc. 83 (), 227-250.
Abstract, references and article information

Net Zero and Beyond: What Role for Bioenergy with Carbon Capture and Storage? 23 January 2020 — 8:30AM TO 10:00AM Anonymous (not verified) 6 January 2020 Chatham House | 10 St James's Square | London | SW1Y 4LE

In the context of the feasibility of reducing greenhouse gas emissions to net zero, policymakers are beginning to pay more attention to options for removing carbon dioxide from the atmosphere. A wide range of potential carbon dioxide removal (CDR) options are currently being discussed and modelled though the most prominent among them are bioenergy with carbon capture and storage (BECCS) and afforestation and reforestation.

There are many reasons to question the reliance on BECCS assumed in the models including the carbon balances achievable, its substantial needs for land, water and other inputs and technically and economically viable carbon capture and storage technologies.

This meeting will examine the potentials and challenges of BECCS in the context of other CDR and emissions abatement options. It will discuss the requisite policy and regulatory frameworks to minimize sustainability and socio-political risks of CDR approaches while also avoiding overshooting climate goals.

Attendance at this event is by invitation only.

Climate action and gender equality: Can we close the gap on one without the other? 8 March 2021 — 2:30PM TO 4:00PM Anonymous (not verified) 15 February 2021 Online

In partnership with the COP26 presidency, policymakers and experts examine the interrelationship between gender equality and climate action, and highlight innovative examples of policy and practice from around the world.

Marking International Women’s Day, this event organized by the COP26 presidency in partnership with Chatham House, will explore how gender equality and climate action go hand-in-hand. The agreement of the Gender Action Plan (GAP) at COP25 sent the message that the time for gender-responsive climate action is now.

This will be a unique opportunity to hear from policymakers and civil society leaders discussing whether enough is being done, as well as highlighting cutting-edge work around the world and suggesting what the future could hold.

The event will be livestreamed on this event page.

Jan Goedgebeur, Jorik Jooken, On-Hei Solomon Lo, Ben Seamone and Carol T. Zamfirescu
Math. Comp. 93 (), 3059-3082.
Abstract, references and article information

Ran Gu and Bing Gao
Math. Comp. 93 (), 2837-2860.
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Ole Løseth Elvetun and Bjørn Fredrik Nielsen
Math. Comp. 93 (), 2811-2836.
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Katherine Baker, Lehel Banjai and Mariya Ptashnyk
Math. Comp. 93 (), 2711-2743.
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Buyang Li, Zongze Yang and Zhi Zhou
Math. Comp. 93 (), 2557-2586.
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Tim Chumley explains the connections between random billiards and the science of heat and energy transfer. If you've ever played billiards or pool, you've used your intuition and some mental geometry to plan your shots. Mathematicians have gone a step further, using these games as inspiration for new mathematical problems. Starting from the simple theoretical setup of a single ball bouncing around in an enclosed region, the possibilities are endless. For instance, if the region is shaped like a stadium (a rectangle with semicircles on opposite sides), and several balls start moving with nearly the same velocity and position, their paths in the region soon differ wildly: chaos. Mathematical billiards even have connections to thermodynamics, the branch of physics dealing with heat, temperature, and energy transfer.

Dr. Outi Tervo of Greenland Institute for Natural Resources, shares how mathematics helps recommend speed limits for marine vessels, which benefits narwhals and Inuit culture. Narwhals "can only be found in the Arctic," said Outi Tervo, a senior scientist at GINR. "These species are going to be threatened by climate change more than other species that can live in a bigger geographical area." The collaboration has already lobbied on behalf of the narwhals to reduce the level of sea traffic in their habitat, after using mathematical analysis to identify how noise from passing boats changes the narwhals' foraging behavior.

Tsz-Kiu Aaron Chow and Yangyang Li
Trans. Amer. Math. Soc. 377 (), 5993-6020.
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Ahmed Elshafei, Ana Cristina Ferreira, Miguel Sánchez and Abdelghani Zeghib
Trans. Amer. Math. Soc. 377 (), 5837-5862.
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Guido De Philippis, Nicola Fusco and Massimiliano Morini
Trans. Amer. Math. Soc. 377 (), 5787-5835.
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Ning Jiang, Yi-Long Luo and Shaojun Tang
Trans. Amer. Math. Soc. 377 (), 5323-5359.
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dannyhennesy posted a photo:

On the Capital planet the rebellious droids had followed maily the Bat-Bot, but as time progressed his circuits had gone all mushy at 780 years or so without maintenance…

Several splinter groups all with their local bot leaders emerged such as the Che-bot, the traffic-light-robot and the Butt-bot, but none of these collected enough sentient circuits to call themselves a popular (or Animata) mass movement!

That was until a cyborg came along, one known as Jones, a long time prisoner and terrorist, his easy solutions to every problem rang well in the masses' auditory circuits!!!

His slogans and simple rhetoric were simple enough for the simple traffic-light to comprehend and cheer!

His language was full of hate towards the organics and especially the humans who were the most common races among the ruling class of the federation!!!

Despite being a “Fleshie” himself his message collected the angry enslaved
bot community by only weeks all rebellious robots except for a few fringe loonies had forgotten the old leaders…

One morning at Jones gave the signal…

All over the capital planet hordes and swarms of any form of mechanical sentient beings attacked first the police stations, then the Company boards running the planet and the federation as well as their starfleet…

Many died, especially the low level police and army! Many mechanicals died too, but their ranks were soon filled by Mutant fleshie allies of the lower levels who hated the Federation feudal society and upper classes as much as their technological allies…

The Federation state apparatus and ruling class, most of their fleet army fled when they knew the game was up, they activated the emergency escape plan and whole city blocks with important factories, administrational units, valuable assets and so on separated from the capital by hidden rocket engines and homed in their course to Mars…

On Mars the federation regrouped and formed their new society…

On the Capital planet, the robots proclaimed the first Techno-republic of the advanced inorganic civilization, the low level fleshies left behind, became slaves and their mutant allies got to rule their own minute chiefdoms as protectorates under the Techno-republic…

Jones was now the undisputed ruler of the capital planet, but the victory was a pyrros one since, all important buildings, all of value was now one Mars!

But as Jones put it:

Our proud race the Techno-species didn’t need the Fleshies administration, their infrastructure, their spaceships…

We shall start from scratch, with a new administration, a new order, every droid shall work at 4x speed than they did during human oppression since now we are free and the fleshies shall work twice as hard than the Techno-Race, until we have breed enough new fleshies so they can do all work!

Our future is bright and shiny like glistering shiny metal!

The snapshot seen here is from the first police station attacked in sector 45-34v-ss-g the first one to fall according to official techno-history!

———————————————/
Designers note:

I am sad to say that this is the last episode in this years-spanning space series… At least for a while, I will still post LEGO hobby stuff here but without a storyline, perhaps small designs and builds… and occasionally a story when I feel like it!!!

I would like to thank all who had been in this journey of our heros, but it has taken far to much time and effort and since the state of the world is as it is, I am spiraling down in another depression, I must stop it before I reach the abyss, so I have remove some stress out of my equation… I ended it in a cliffhanger so I can easily restart it when my mental health improves… I hope that won’t be forever???

I would love if someone used my characters or ideas, please send me a link if you do, I would love to read it or look at it!!!

But there will be more Lego, just in different format without long stories, I need to focus more on my art and to be honest that is the only time the mental pain eases, when I create!!!


Peace and Noise!

MushroomBrain a FOL

Shengyu Tang
Proc. Amer. Math. Soc. 152 (), 5381-5394.
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Sudip Ranjan Bhuia
Proc. Amer. Math. Soc. 152 (), 5249-5263.
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Lawford Hatcher
Proc. Amer. Math. Soc. 152 (), 5191-5205.
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Anh Tuan Nguyen, Tómas Caraballo and Nguyen Huy Tuan
Proc. Amer. Math. Soc. 152 (), 5175-5189.
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Donghyeok Lim and Christian Maire
Proc. Amer. Math. Soc. 152 (), 5013-5024.
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E. P. Ushakova and K. E. Ushakova
St. Petersburg Math. J. 35 (), 571-595.
Abstract, references and article information

T. A. Suslina
St. Petersburg Math. J. 35 (), 537-570.
Abstract, references and article information

E. Voronetsky
St. Petersburg Math. J. 35 (), 433-443.
Abstract, references and article information