It can be difficult for doctors to assess the level of consciousness in people who have had serious brain injuries, but observing their reaction to strong odours may help

A well-preserved fossilised tail from Spinosaurus suggests this massive dinosaur may have been able to propel itself and hunt for prey in the water

Looking at how many more people are dying than usual gives an idea of the coronavirus pandemic’s true effect – and suggests a far higher death toll in many countries

A robot that uses artificial intelligence to find and remove weeds could eventually be used as an alternative to chemical insecticides

We are already seeing the pandemic's effects on mental health, and we need to act urgently to avoid a full-blown crisis, says Sam Howells  

Over half the world’s wild tigers now live 5 kilometres from a road, and infrastructure projects planned in Asia could fragment their habitat further

Many studies suggest coronavirus has low transmission rates among children, but there are still risks to reopening schools that were closed due to social distancing policies

A number of studies have found a link between air pollution and increased covid-19 deaths, but it isn't clear why. Both attack the lungs, but it could just be that more people live in polluted areas

Getting your wok scorching hot and preparing your ingredients in advance is the best way to make a tasty stir-fry, says Sam Wong

The UK government has refused to say how many covid-19 contact tracers it has employed, with less than three weeks to go until its target of recruiting 18,000 of them by mid-May

Can you really be addicted to your smartphone? Daria Kuss has shown that it is only a problem for a small number of people - and she knows how to help

Hyperconsumption adds to environmental destruction that brings people into contact with animal viruses that can spark pandemics. We have to avoid the temptation to rely on it to get us out, writes Graham Lawton

The remains of three slaves found in Mexico contain the earliest signs of the hepatitis B virus and yaws bacteria in the Americas, suggesting transatlantic slavery introduced these diseases

Lockdown measures and pandemic-related anxiety may be making you have more vivid dreams. Evidence suggests talking about them can help

As many as 86 per cent of people meet the criteria for a psychiatric diagnosis by middle age – and in many cases, a different diagnosis at some other time

Vampire bats are social creatures that build relationships through grooming and food-sharing, but when they feel ill, they self-isolate and call out for contact far less

Healthcare systems need to prepare for the extensive physiotherapy and mental rehabilitation that people put on ventilators for covid-19 will need as they recover

NASA has awarded $967 million to three space flight companies – Blue Origin, Dynetics and SpaceX – to build lunar landers that will be part of the Artemis programme to send humans to the moon by 2024

Slow-moving underwater currents are leading to build ups of microplastics in biologically rich areas on the sea floor

Stars that are similar to the sun in every way we can measure are mostly more active than the sun, which hints that the sun’s activity may ramp up someday, risking solar eruptions

Apollo 11, Take Your Pills, Pandemic: How to prevent an outbreak, and Icarus are all great documentaries available to stream at the moment

Australia recorded just 229 flu cases this April, compared with 18,705 last April, probably due to lockdown measures to stop the spread of the coronavirus

For years, the oldest turtle fossils we could find had fully formed shells. Now, more primitive fossils are revealing the strange tale of how turtle shells evolved

The Tully Monster is a famously odd 300-million-year-old fossil that looks like an alien, but a new analysis suggests it was a backboned animal like a hagfish or lamprey

We tend to overestimate our height and underestimate our weight to fit society’s ideals, or because we think we're still the same as our younger selves

Weird blasts of radio waves from space called fast radio bursts have been baffling astronomers since they were discovered, but after finding one in our galaxy we may finally know what creates them

SpaceX’s first crewed launch is planned for 27 May and will be run from a mission control with desks set six feet apart to comply with social distancing protocols

For orangutans, scratching is contagious – but unexpectedly, the behaviour is transmitted more between individuals that do not know each other well

Mark O'Connell's book Notes from an Apocalypse is an exploration of doomsday preparation from Mars colonists to fallout shelter estate agents

Martha Wells's action-packed novel Network Effect puts you inside the head of a Murderbot. It raises fascinating questions you will think about for a long time, says Sally Adee

Four coronaviruses cause around a quarter of all common colds, but each was probably deadly when it first made the leap to humans. We can learn a lot from what happened next

A fresh look at the world’s oldest religious texts suggests ancient Egyptians saw the sky as a water-filled iron container from which chunks fell to Earth as meteorites

People with rheumatoid arthritis often take medicines that can have damaging side-effects, but a system that uses red light to deliver drugs exactly where they are needed could help

The UK government will begin trials of its coronavirus contact-tracing app this week, but what impact it will have on slowing the spread of covid-19 is unclear

In a new photography book, the home computer revolution of the 1970s, 1980s and 1990s is told through nostalgic industrial-design images

Our best mathematical theory of consciousness is sparking a rethink of one of science’s hardest problems – how simple matter gives rise to a complex mind

From vintage satellites to lunar rovers, space archaeologist Alice Gorman is teasing out a unique history of humanity from the objects we've dispatched from Earth

China just tested its biggest rocket yet, along with a new capsule designed to carry humans to its planned space station, the moon and beyond

We’ve found a 200-metre cliff in Mars's Hellas basin, the first evidence of a river that flowed on the planet for more than 100,000 years

Brain implants have revealed that we replay conscious experiences while we sleep, with the same patterns of neurons firing during sleep as in waking life

To figure out what makes some people more vulnerable to severe cases of covid-19, we need to rethink what we know about infection

Telling Lies is a game where you sift through video calls to solve a mystery. Half the time you don't know what you should be doing, but that's part of the fun, says Jacob Aron

Once the coronavirus pandemic is over, we must work out how to stop the spread of poor information that has helped make a bad situation that much worse

Astronomers found a star that appeared to be orbiting nothing at all – but it’s actually the closest black hole ever at just 1000 light years away

Many countries are focusing coronavirus testing on people who have covid-19 symptoms. But regularly testing all essential workers would have more of an impact

Amid the global coronavirus outbreak, a second epidemic of preliminary, unverified and misinterpreted research has broken out. Can it be fixed?

With social media, newspapers and politicians all espousing unverified covid-19 findings, use these seven signs to tell if a study should be treated with caution

A small increase in water temperature near a Japanese nuclear power plant allowed tropical fish to colonise the area, suggesting global warming will drastically alter some marine ecosystems

A study of brain cells in a dish adds to growing evidence that Alzheimer’s disease can be caused by herpes viruses, but antiviral treatment may help stop it

The BCG tuberculosis vaccine boosts the production of immune cells and this may explain how it protects newborns from dying of sepsis