This algae, called Chaetoceros atlanticus, can bloom in the ocean when iron is added to the water. It captures carbon dioxide from the atmosphere and carries the carbon down underwater when it sinks. Marina Montresor, SZN/Alfred Wegener Institute hide caption

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Can Adding Iron To Oceans Slow Global Warming?
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Thieving Rodents Keep Circle Of Life Going For Trees
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U.S. Feels Less Guilt About Environmental Choices
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Researchers Take Stock Of 2011 Weather
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Coral polyps feed in the plankton-rich waters by Santa Catalina, Panama. A new study of coral reefs off the Pacific coast of Panama shows that dead coral reefs may be able to recover from rising ocean temperatures and other environmental disasters. laszlo-photo/Flickr hide caption

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Dead Reefs Can Come Back To Life, Study Says
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This graphic depicts a proton-proton collision from the search for the Higgs boson particle. CERN/AFP/Getty Images hide caption

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New Subatomic Particle May Be Physics' Missing Link
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Physicists In Switzerland Make Momentous Discovery
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This image, from a sensor at the particle accelerator at CERN, is an example of the data signature a Higgs particle might generate. CERN hide caption

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Is The Hunt For The 'God Particle' Finally Over?
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Trainees with Royal Dutch Shell learn to deploy oil spill booms in the waters near the port of Valdez in Alaska. The company is training about 200 spill responders. Richard Harris/NPR hide caption

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Ahead Of Alaska Drilling, Shell Practices Cleaning Up
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U.N. General Assembly President Nassir Abdulaziz Al-Nasser, United Nations Secretary General Ban Ki-Moon, Brazilian President Dilma Rousseff, Brazil's Secretary of the Conference Luis Figueiredo Machado and Rio+20 Secretary General Sha Zukang attend the closing ceremony of the Conference on Sustainable Development in Rio de Janeiro on Friday. Andre Penner/AP hide caption

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Rio+20 Summit Sustains Little More Than Sentiment
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Shell says it hopes to never need to use its new 300-foot-long, $100 million oil recovery ship named Nanuq for anything other than drills and training. Richard Harris/NPR hide caption

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Shell Faces Pushback As Alaska Drilling Nears
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United Nations Secretary-General Ban Ki-moon speaks during a news conference on June 7 at the United Nations headquarters in New York City. Ban wants to focus on making energy available to the poorest populations of the world. Andrew Burton/Getty Images hide caption

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Rio Environment Meeting Focuses On 'Energy For All'
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When a raindrop hits a mosquito, the mosquito and drop join together, and the mosquito rides the drop for about a thousandth of a second before its wings, which act like kites, pull it out of the water. CDC Public Health Image Library hide caption

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Splish Splat? Why Raindrops Don't Kill Mosquitoes
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A Tokyo sushi restaurant displays blocks of fat meat tuna cut out from a 269kg bluefin tuna. Yoshikazu Tsuno/AFP/Getty Images hide caption

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Nuclear Tuna Is Hot News, But Not Because It's Going To Make You Sick
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Researcher Hans Roy opens a core sample taken from the bottom of the Pacific Ocean. A core sample like this one contained bacteria that settled on the seafloor 86 million years ago. Bo Barker Jorgensen/Science/AAAS hide caption

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Ancient Deep-Sea Bacteria Are In No Hurry To Eat
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