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The rate of release of carbon into the atmosphere today is nearly 10 times as fast as during the Paleocene-Eocene Thermal Maximum (PETM), 55.9 million years ago, the best analog we have for current global warming, according to an international team of geologists. Rate matters and this current rapid change may not allow sufficient time for the biological environment to adjust.

A team of scientists from Aberystwyth University, the University of Exeter and Stockholm University, led by Welsh scientist and Professor Neil Glasser, have released at study published in Nature Geoscience showing that the glaciers of Patagonia in South America are melting at a much faster rate than originally thought.

In the wake of several highly publicized suicides by gay teenagers, a new study finds that a negative social environment surrounding gay youth is associated with high rates of suicide attempts by lesbian, gay, and bisexual (LGB) youth. The study, "The Social Environment and Suicide Attempts in a Population-Based Sample of LGB Youth," appears in the April 18 issue of Pediatrics. It was conducted by by Robert Wood Johnson Foundation Health & Society Scholar Mark L. Hatzenbuehler at Columbia University's Mailman School of Public Health.

When the Earth's carbon dioxide level increased at a rapid rate during the Triassic-Jurassic period 200 million years ago, nearly half the ocean's marine life became extinct. USC Dornsife geologists contributed to a recent paper that examines materials embedded in ancient rocks to provide clues about the possibility of similar future global events.

A new study from Forrester proves that the majority of Americans are a bunch of lazy re-tweeters. Ninety-three percent of online consumers in emerging markets of China, India, Mexico and Brazil use social media tools at least once-a-month. U.S. and European consumers are far more likely to use social media as a spectator-like sport, joining it and then just watching it fly by. In the U.S., 68% of social media users are joiners, which means they maintain a profile on a social networking site and visit social networks. Only 73% are spectators, or users who mostly just read blogs, online forums, customer ratings/reviews and tweets, listen to podcasts and watch videos. This number is strikingly similar in Europe (EU-7 countries, to be specific), with 69% of users classified as spectators and 50% as joiners.

Applications on modern wireless devices make demands on data rate and connectivity far beyond anything experienced in the past. One way to meet these stringent requirements is to give the device multiple antennas or multiple-input multiple-output (MIMO) technology. The problem of physically accommodating these additional antennas in the latest consumer products is investigated in new research from the University of Bristol.

Using a web app that is provided online, participants are asked to attempt to identify certain constellations and, if they can, rate them against magnitude charts. The project tracks the increasing problem of disappearing darkness, which can interrupt the cycles of plant and animal life, eventually to a fatal degree.

On the other hand, humanity's malignant effect on the environment has accelerated the rate of extinction for plants and animals, which now reaches perhaps 50,000 species a year. But even here there was some good news. We reversed our first man-made global atmospheric crisis by banning chlorofluorocarbons -- by 2015, the Antarctic ozone hole will have shrunk by nearly 400,000 square miles. Stopping climate change has been a slower process. Nonetheless, in 2008, the G-8 did commit to halving carbon emissions by 2050. And a range of technological advances -- from hydrogen fuel cells to compact fluorescent bulbs -- suggests that a low-carbon future need not require surrendering a high quality of life. Technology has done more than improve energy efficiency. Today, there are more than 4 billion mobile-phone subscribers, compared with only 750 million at the decade's start. Cell phones are being used to provide financial services in the Philippines, monitor real-time commodity futures prices in Vietnam, and teach literacy in Niger. And streaming video means that fans can watch cricket even in benighted countries that don't broadcast it -- or upload citizen reports from security crackdowns in Tehran. Perhaps technology also helps account for the striking disconnect between the reality of worldwide progress and the perception of global decline. We're more able than ever to witness the tragedy of millions of our fellow humans on television or online. And, rightly so, we're more outraged than ever that suffering continues in a world of such technological wonder and economic plenty. Nonetheless, if you had to choose a decade in history in which to be alive, the first of the 21st century would undoubtedly be it. More people lived lives of greater freedom, security, longevity, and wealth than ever before. And now, billions of them can tweet the good news. Bring on the 'Teenies.

Researchers are testing different ways of improving rechargeable batteries for electric vehicles and nanotechnology plays an important role in the development. The aim is to offer batteries that have fast charge and discharge rates as well as high stored energy per mass. This can make electric vehicles a competitive alternative to petrol-powered vehicles.

An international research team including University of Pennsylvania scientists has shown that the rate of sea-level rise along the U.S. Atlantic coast is greater now than at any time in the past 2,000 years and that there is a consistent link between changes in global mean surface temperature and sea level.

There is a vitally important national and state-level discussion taking place about how to address the government's frighteningly large deficits while limiting disruptions for all Americans. But while federal and state actions affect us all, much of what concerns Americans most directly and personally happens closer to home and increasingly, this means in our cities. Budget cuts simply can't derail efforts to make our cities smarter. Today our nation's cities are facing a "perfect storm." For many cities, their populations are growing at the same time that their budgets are shrinking. Today, for the first time, more than 50% of the world's population lives in cities. In the last decade large metropolitan areas in the U.S. grew by a combined 10% - nearly double the rate of the rest of the country. Our large metro areas now house two thirds of America's total population. They have become the dominant forces in our economy and society.

Drug-resistant strains of Staphylococcus aureus, a bacteria linked to a wide range of human diseases, are present in meat and poultry from U.S. grocery stores at unexpectedly high rates, according to a nationwide study by the Translational Genomics Research Institute (TGen).

"Global warming accelerated since the 1970s and broke more countries' temperature records than ever before in the first decade of the new millennium, U.N. climate experts said Wednesday."

According to a new report published in the Proceedings of the National Academy of Sciences, human development and habitat loss are not the main contributor to the population decline of many amphibian species. In actuality, that human encroachment on natural habitat many actually be saving some of them.