Dwarf galaxies are enigmas wrapped in riddles. Although they are the smallest galaxies, they represent some of the biggest mysteries about our universe. While many dwarf galaxies surround our own Milky Way, there seem to be far too few of them compared with standard cosmological models, which raises a lot of questions about the nature of dark matter and its role in galaxy formation.

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Quasars are supermassive black holes that sit at the center of enormous galaxies, accreting matter. They shine so brightly that they are often referred to as beacons and are among the most-distant objects in the universe that we can currently study. New work from a team led by Carnegie's Eduardo Bañados has discovered 63 new quasars from when the universe was only a billion years old. (It's about 14 billion years old today.)

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Two papers published by an assistant professor at the University of California, Riverside and several collaborators explain why the universe has enough energy to become transparent.

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NASA's Aqua satellite provided a visible image of Super Typhoon Meranti as it continued to move toward Taiwan and the northern Philippines.

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Payments for ecosystem services (PES) are one of a number of policy options available to support the provision of ecosystem services. Based on the characteristics of ecosystem services, a recent study has developed a framework for deciding when payments are a suitable tool for delivering ecosystem services.

Some 'intangible' ecosystem services, such as the aesthetic and cultural value, as well as the recreational use of land, are particularly difficult to price. New research has proposed three explorative methods to value these more intangible services using landscape evaluation, statistics on level of recreational use and the price of real estate in the area.

When natural disasters, such as earthquakes, storms and hurricanes, are reported in the media, they are often accompanied by an assessment of the cost of the disaster. While such information can be useful to help governments and international organisations target aid and recovery efforts, the details of what is included in the assessment, and the methods used, are often unclear.

A new study has proposed a method to place monetary value on green infrastructure at both a project and regional scale, which illustrates the value of investing in green infrastructure to the public and other stakeholders.

Wetland management needs to consider the role wetlands play in supporting livelihoods and wellbeing as well as more traditional conservation goals, according to UK researchers. Such a ‘human-centric’ approach, would link hydrological conservation to societal benefits, including clean water, food production, flood protection and improved human health.

A new study has developed a system to assess the potential of ecosystems to supply ecosystem services in the EU-25 plus Switzerland and Norway. It is one of the first to use historical and projected data on land use change at a continental scale to estimate the provision of ecosystem services and to assess possible trade-offs between them.

There is increasing policy demand for the ‘scaling-up’ of ecosystem service valuations to a national or regional level, but available methods for doing this are limited. A new study has proposed a new scaling-up methodology and tested it by assessing the impact of climate change on European wetlands.

Researchers have developed a new method to investigate the effects of different water pricing policies at the river basin scale. The system is intended to be used when water has to be allocated to different users under conditions of water scarcity.

In economic terms, overfishing can be regarded as borrowing natural capital at a high rate of interest, according to a new study. Combining economic and biological principles, the study develops a concept that expresses overfishing in terms of the ‘interest’ that the fishing industry have to repay in future years as a result of lost income from depleted fish stocks.

Valuations of water quality as an ecosystem service often fail to include related services like recreation or human health, and do not consider the effects of water quality changes due to management. Researchers have now developed a template for valuation that considers multiple services and links management actions to changes in water quality and ultimate economic value.

Interactions between population growth, consumption and the use of natural products and services have created an unsustainable pressure on the environment. New research has provided a detailed investigation into the relationships between these three trends, providing insight into how to alleviate these pressures. It concludes they cannot be addressed by market mechanisms or technological advances alone.

Ecosystem services, such as coastal protection or water supply, form an integral part of ecosystem-based adaptation to climate change. However, preserving and restoring ecosystems and their services relies on the economic system that supports these efforts. Ecosystem services will not be best protected by the classic market framework, new research suggests.

Costs of installing, maintaining and disposing of some green wall systems may outweigh the value of some of their benefits for householders, a recent study suggests. While the researchers omitted some of the wider social benefits, they found that reductions in heating and air conditioning costs, longevity of green walls and increases in property values did not compensate for their costs. The researchers suggest that government incentives to lower set-up costs could significantly increase the walls' economic sustainability.

The use of important ecosystem services, such as carbon storage or hunting, can be estimated through ecosystem accounting methods, a new study demonstrates. The researchers tested models that could help policymakers to understand the capacity of ecosystems to generate ecosystem services, and how these services are used over time.

Bee pollination improves the shape, weight and shelf-life of strawberries, contributing a staggering €1.05 billion to the European strawberry market per year, new research suggests. By blocking bees from a set of plants, the researchers demonstrated the substantial effects of bee pollination on the quality of the fruit.

Following extreme weather events, many countries are unable to afford the costs of providing relief to communities and repairing infrastructure, a new study suggests. The researchers estimate that providing relief on a global scale for events which recur every 10 to 50 years would cost US$3.3 billion (€2.37 billion) annually.

While energy-efficiency gains are needed to lower Europe’s greenhouse gas emissions, low-carbon technologies are also crucial if we are to meet ambitious EU emissions targets in the long term, new comparative research concludes.

Public support grows for wind farms if they are located away from recreational areas and if they are either fully or partly owned by organisations within the local community. In addition, Swedish consumers would accept bigger bills for electricity generated by wind power if the local population were heavily involved in wind farm planning, a recent survey suggests. This article was updated 30.09.14 to correct an error in the cost of the REC scheme.

A process to help identify and value cultural ecosystem services has been developed by researchers and is demonstrated in a recent Black Sea case study. This highlighted the value of anchovies to Turkish identity: respondents to a survey said that they would be willing to pay 135 Turkish lira (€49) per year in order to fund environmental management that protects this culturally important species.

Seagrass meadows are worth around €78 million every year to commercial fishing in the Mediterranean, a new study estimates. Their annual value to recreational fishing is even bigger, at an estimated €112 million. The researchers say that marine policies should consider the socioeconomic effects of the loss of seagrass, which provides habitat for many fishery species.

To increase energy efficiency, many countries are encouraging their citizens to make individual energy-saving changes, such as changing the type of light bulbs they use. This study investigated the relationship between understanding of environmental issues and effective energy-saving behaviour and shows that informed citizens are key to successful policy.

An economic analysis of 14 common categories of waste electric and electronic equipment (WEEE) has highlighted the economic value of bringing e-waste streams into the circular economy. The overall worth is calculated as €2.15 billion to European markets, with a potential rise to €3.67 billion as volumes increase.

The EU Waste Framework Directive aims to recycle or recover materially 70% of non-hazardous construction and demolition waste by 2020. This study evaluated the performance of the Finnish waste management system against this target. The results showed that the system generates environmental benefits and is profitable, but has not reached the 70% target. The researchers suggest ways the target could be met and recommend region-specific recycling objectives in the EU.

The livestock sector is estimated to contribute 14.5% of all global anthropogenic greenhouse gas (GHG) emissions. This study estimated the costs of reducing emissions from ruminant livestock using five different practices. The findings will help policymakers to understand the cost effectiveness of different interventions in the sector, and the contribution that different policies could make to addressing climate change.

Grapes are sensitive to small changes in temperature, rain and sunlight, meaning climate change will have implications for wine producers worldwide. This study assessed local vulnerabilities and adaptation strategies in two wine-producing areas in France. The findings may help growers to develop suitable methods of adapting to long-term climate change.

Water and carbon dioxide (CO2) can be converted into ‘solar thermochemical fuel’ using energy from the sun and very high temperatures. A new study has analysed the production of this fuel and found that, under favourable future conditions, costs could be as little as €1.28 per litre, with close to zero life-cycle greenhouse gas (GHG) emissions. Although suitable as a substitute for any hydrocarbon fuel, it could be particularly useful as a much-needed alternative for energy-dense jet fuel.

A new analysis of waste recycling systems in Portugal highlights where kerbside (edge of pavement) collection systems could be optimised, to decrease their environmental impact. In this case, researchers found that the kerbside system was less favourable economically and environmentally due to more packaging and more fuel consumption per tonne of waste, compared to a system where recyclable materials are deposited by residents in large containers. But the researchers suggest that measures such as re-usable boxes and efficient collection routes could help to mitigate the impact of kerbside collection. While there is an environmental impact from waste collection, processing and disposal, this study only focused on the collection phase.

A team of Italian scientists has published a study highlighting the important role of intersectoral linkages and eco-innovations in shaping industry’s environmental performance (a measure of its ability to meet environmental targets and objectives) across Europe. The research indicates that eco-innovation can produce positive effects, both directly (in the sector where it is developed) and indirectly (in linked sectors at home and abroad). These insights are relevant to corporate and policy governance strategies aimed at maximising the environmental and economic potential of novel green technologies.

A third of all food produced for human consumption is lost or wasted, and the EU alone wastes an estimated 88 billion tonnes of food every single year. This is equivalent to 76 kilograms per person per year. This is an unsustainable level of waste which threatens food supply and the environment. The EU is taking several actions against food waste, as a critical part of efforts to achieve a circular economy, where resources are used more sustainably.

Consumers are willing to pay more for food that has been produced via sustainable processes and with a reduced environmental impact. A large-scale US survey, that questioned strawberry consumers on aspects of sustainable food production, suggests that food producers could benefit from increased premiums if product ecolabels were to advertise specific environmental virtues.

Agri-environmental measures (AEM) are designed to encourage farmers to protect and enhance the environment on their farmland by paying them for the provision of environmental services. This study suggests that AEM would be more effective if payments were targeted to areas under the greatest environmental pressures, such as intensive agricultural regions — to gain maximum environmental benefits.

How is it possible to become eco-innovative as a small-to-medium enterprise (SME)? What benefits could eco-innovations bring to your company? Together SMEs make up over 99% of all enterprises in the EU, accounting for two-thirds of total employment. Though the environmental footprints of individual firms may be relatively small, their collective impact is much more significant.

Gendered expectations in marriage are not just bad for women, they are also bad for men, according to a new study by University of Connecticut (UConn) sociologists.

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You just received the promotion you have worked so hard for, but you overhear a co-worker say that you got it because the boss only gives the easy projects to you while the hard ones are dumped on everyone else. Some of your envious co-workers come to congratulate you with the aim of being seen with you for reputational benefits, but some others may be less kind in their response.

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Death and mourning were largely considered private matters in the 20th century, with the public remembrances common in previous eras replaced by intimate gatherings behind closed doors in funeral parlors and family homes.

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To everything there is a season -- even divorce, new research from University of Washington sociologists concludes.

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The U.S. prison population continued to rise even after the crime rate began declining in the mid-1990s because judges were faced with more repeat offenders, a new study suggests.

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For older adults, having more or closer family members in one's social network decreases his or her likelihood of death, but having a larger or closer group of friends does not, finds a new study that will be presented at the 111th Annual Meeting of the American Sociological Association (ASA).

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From casual acoustic melodies at the coffee shop to throbbing electronic beats at teen clothing outlets, music is used to mold customer experience and behavior. But what impact does it have on employees?

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Our beliefs about how farm animals are raised can shape our meat-eating experience, according to a new study led by Lisa Feldman Barrett, University Distinguished Professor of Psychology at Northeastern University.

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Why do some people want to live a very long time, while others would prefer to die relatively young? In a latest study, a team of researchers including Vegard Skirbekk, PhD, at the Robert N. Butler Columbia Aging Center, investigated how long young and middle-aged adults in the United States say they want to live in relation to a number of personal characteristics. The results showed that more than one out of six people would prefer to die younger than age 80, before reaching average life expectancy. There was no indication that the relationship between preferring a life shorter or longer than average life expectancy depended on age, gender or education.

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The first study to investigate how dog brains process speech shows that our best friends in the animal kingdom care about both what we say and how we say it. Dogs, like people, use the left hemisphere to process words, a right hemisphere brain region to process intonation, and praising activates dog's reward center only when both words and intonation match, according to a study in Science.

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An increasing number of US adults are using marijuana, as fewer people perceive the drug as harmful, according to a survey of over 500000 US adults conducted between 2002 and 2014 published in The Lancet Psychiatry. As marijuana has become increasingly potent over the past decade, the authors say that the findings suggest the need for improved education and prevention messages regarding the risks of marijuana.

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Preliminary findings from a mass participation study have indicated a link between weather conditions - specifically rain and lack of sunshine - and chronic pain.

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Personal tracking tools -- technologies that meticulously count our daily steps, map our runs, account for each purchase - fall in and out of favor in users' lives.

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The first inkling of the potential of the industry came with the appearance of smartphones like Nokia 9000, which found ready acceptance among professionals, entrepreneurs and even enterprises.