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In 2011, the world will emit more than 35 Billion tons of carbon dioxide. Every day of the year, almost a hundred million tons will be released into the atmosphere.

It’s been nearly 20 years since astronomers first identified a planet outside our solar system. More than 500 exoplanets have been discovered since then, yet it’s not clear if even one of them might be habitable

Here's a frustrating dilemma: having 500, a thousand plus Facebook friends and the prospect of zero fans on your new Facebook business page. If only you could migrate those folks right over and have an instant fan base

Some 3.2 million Americans have chronic hepatitis C , an infection that can linger in the body for years before producing symptoms. It can eventually lead to serious liver scarring and cancer. And most infections in the U.S

Google encroaches on social, with its new +1 feature. You click on stuff that your friends like.

Welcome to a new regular feature called "Too Hard for Science?" The idea here is to interview scientists about pet ideas they would love to explore that seem impossible to investigate in real life. Perhaps they involve machines beyond the realm of possibility, such as particle accelerators as big as the sun; perhaps they would be completely unethical, such as lethal experiments involving people; perhaps they would be too expensive, or require centuries to run, or could never find volunteers to participate, or are in some way unprovable. [More]

2011 is the International Year of Chemistry. So scientists at the national meeting of the American Chemical Society in Anaheim raised a glass

By Richard A. [More]

This Friday, April 1, begins a month-long participatory blogging project at the Museum of Life and Science in Durham, N.C., called Experimonth: Mood . The culmination of many ideas and personal experiments by museum staff members, their families and friends, Experimonth has morphed from a personal project centered around New Year's Resolutions into an effort to pair local researchers with our community in meaningful ways

Dear EarthTalk : I understand a recent government report concluded that our global food system is in deep trouble, that roughly two billion people are hungry or undernourished while another billion are overconsuming to the point of obesity. What’s going on?

AccuWeather.com Hurricane Center meteorologists, led by Meteorologist and Hurricane Forecaster Paul Pastelok, are predicting an active season for 2011 with more impact on the U.S. coastline than last year. The team is forecasting a total of 15 named tropical storms, eight of which will attain hurricane status and three of which will attain major hurricane status (Category 3 or higher).

If you type "Japanese barberry" into a search engine, the first result will likely be a National Park Service web page designed to look like a "Wanted" poster. "LEAST WANTED" is written across the top. It’s a fact sheet about the ecological threat posed by this invasive shrub.

For more than 50 years microbiologists have warned against using antibiotics to fatten up farm animals. The practice, they argue, threatens human health by turning farms into breeding grounds of drug-resistant bacteria. Farmers responded that restricting antibiotics in livestock would devastate the industry and significantly raise costs to consumers.

In April 2010, amid mounting criticism that his space plan lacked direction, President Barack Obama gave a speech in Florida to lay out a few ambitious goals he had in mind for NASA. The details of how those targets would be met remain somewhat sketchy even today, but the goals themselves were clear--sometime around 2025, the U.S. would perform an unprecedented feat.