Jay Keasling (left), speaking with Rajit Sapar at the Joint BioEnergy Institute, is pioneering a technique to develop diesel fuel from yeast. Courtesy of Lawrence Berkeley National Laboratory hide caption

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Put Down Oil Drill, Pick Up The Test Tube: Making Fuel From Yeast

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Global Thermostat's pilot plant in Menlo Park, Calif., pulls carbon dioxide from the surrounding air. The next challenge is to find uses for the captured gas. Courtesy of Global Thermostat hide caption

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This Climate Fix Might Be Decades Ahead Of Its Time

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President Obama unveils his plan on climate change Tuesday at Georgetown University in Washington, D.C. The president laid out his plan to reduce carbon pollution and to prepare the country for the impacts of climate change. Alex Wong/Getty Images hide caption

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Obama's Climate Strategy Doesn't Require Congressional Approval

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The Capitol dome is seen behind the Capitol Power Plant, which provides power to buildings in the Capitol complex in Washington, D.C. Carolyn Kaster/AP hide caption

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Obama To Announce Sweeping Plan To Address Climate Change

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Thierry Chopin from the University of New Brunswick examines a raft that holds strings of seaweed. The seaweed grows around pens of farmed salmon and soaks up some of the nutrients that would otherwise pollute the Bay of Fundy. Richard Harris/NPR hide caption

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How To Clean Up Fish Farms And Raise More Seafood At The Same Time

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Gizmo Uses Lung Cells To Sniff Out Health Hazards In Urban Air

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Houston's Petrochemical Industry, Source Of Jobs And Smog

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The Houston Ship Channel is home to a wide range of heavy industry, including chemical processing plants and petrochemical refineries. Richard Harris/NPR hide caption

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Breathing Easier: How Houston Is Working To Clean Up Its Air

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Ira Leifer, next to an RV he has outfitted with methane sensors and other equipment to sniff the air. Richard Harris/NPR hide caption

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Not Your Grandpa's RV: This Roving Lab Tracks Air Pollution

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Crew members unload a catch of sockeye salmon at Craig, Alaska, in 2005. Researchers say fish are being found in new areas because of changing ocean temperatures. Melissa Farlow/National Geographic/Getty Images hide caption

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Go Fish (Somewhere Else): Warming Oceans Are Altering Catches

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Carbon dioxide readings at the Mauna Loa Observatory in Hawaii have reached what atmospheric scientist Ralph Keeling calls a "psychological threshold" of 400 parts per million. The amount of carbon dioxide in the atmosphere has been steadily increasing since near-constant measurements began at the observatory in 1958. Jonathan Kingston/National Geographic/Getty Images hide caption

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'Dangerous Territory': Carbon Dioxide Levels Reach Milestone

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Can Acid Neutralizers Help Coral Reefs Bounce Back?

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Increased Carbon Dioxide Levels Damage Coral Reefs

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Miguel Modestino, a Ph.D. student at the University of California, Berkeley, is part of the team working to create a solar fuels generator at the Joint Center for Artificial Photosynthesis. Roy Kaltschmidt/Lawrence Berkeley National Lab hide caption

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Could An 'Artificial Leaf' Fuel Your Car?

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