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

Ira Leifer, next to an RV he has outfitted with methane sensors and other equipment to sniff the air.

May 18, 2013 Atmospheric scientist Ira Leifer installed special air sensors on a camper, then drove from Florida to California, measuring methane levels all along the way. More than 6,000 readings later, he found some noticeable spikes, especially around petrochemical plants and urban areas like Los Angeles.

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A Small Shock To The System May Help Brain With Math()  

Ever get stuck on these?

May 16, 2013 The results are preliminary, and alpha parents seeking an edge for their children shouldn't risk electrocution. Still, the findings are provocative and may lead researchers down a new road.

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Water Trapped For 1.5 Billion Years Could Hold Ancient Life()  

This map, from the United States Geological Survey, shows the age of bedrock in different regions of North America.  Scientists found ancient water in bedrock north of Lake Superior.  This region, colored red, was formed more than 2.5 billion years ago.

May 16, 2013 Scientists have discovered water that was sealed in Canadian bedrock for nearly half of Earth's history. It may contain the descendants of ancient microbes. The discovery could give scientists new insights into early life on Earth and inform the search for life on other planets.

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How Researchers Cloned Human Embryos()  

Human embryos grow in a petri dish two days after scientists in Oregon cloned them from a donor's skin cell.

May 15, 2013 After decades of trying, scientists say they've finally figured out how to make personalized embryonic stem cells. One day, these designer cells may help treat an array of diseases. A jolt of caffeine and and a little electric shock helped to do the trick.

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The Salt

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

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.

May 15, 2013 Fish are moving away from the equator and toward the poles to maintain their preferred water temperature. That means, for example, that fishermen are seeing swordfish normally found in the Mediterranean swimming near Denmark. But in the tropics, there are no fish to replace the ones that are leaving.

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Scientists Clone Human Embryos To Make Stem Cells()  

A scientist removes the nucleus from a human egg using a pipette. This is the first step to making personalized embryonic stem cells.

May 15, 2013 The achievement is a long-sought step toward harnessing the potential power of such cells to treat diseases. But the discovery raises ethical concerns because it brings researchers closer to cloning humans.

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