archive

Saturday, May 18, 2013

Environment

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.

Transcript

On Weekend Edition SaturdayPlaylist

Friday, May 17, 2013
Thursday, May 16, 2013

Shots - Health News

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.

Summary

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.

Transcript

On Morning EditionPlaylist

Wednesday, May 15, 2013

Shots - Health News

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.

Summary

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.

Transcript

On All Things ConsideredPlaylist

Shots - Health News

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.

Transcript

On All Things ConsideredPlaylist

Tuesday, May 14, 2013

Environment

With Rising Seas, America's Birthplace Could Disappear

Colonists built the original glass-blowing kiln in Jamestown, Va., at this beach for easy access to the sand. Now the site is just inches above the water level.

May 14, 2013 By the end of the century, ocean levels could rise by 2 or 3 feet. That's enough to flood the colonists' first settlement at Jamestown, Va. And it's putting pressure on archaeologists to get as many artifacts out of the ground as quickly as possible — before it's too late.

Transcript

On All Things ConsideredPlaylist

Monday, May 13, 2013

The Salt

Why Humans Took Up Farming: They Like To Own Stuff

Prehistoric "pantries": This illustration is based on archaeological findings in Jordan of structures built to store extra grain some 11,000-12,000 years ago.

May 13, 2013 The appeal of owning your own property — and all the private goods that came with it — may have convinced nomadic humans to settle down and take up farming. So says a new study that tried to puzzle out why early farmers bothered with agriculture.

Summary

Environment

Atop A Hawaiian Mountain, A Constant Sniff For Carbon Dioxide

Researchers use the 120-foot tower atop Mauna Loa in Hawaii to collect air samples and measure the amount of carbon dioxide in the atmosphere. Mauna Kea looms in the distance.

May 13, 2013 Since 1958, researchers have been measuring the amount of carbon dioxide in the atmosphere at the Mauna Loa Observatory. The remote outpost has just reported a carbon dioxide level of 400 parts per million — the highest it has climbed in the modern age.

Transcript

On Morning EditionPlaylist

Friday, May 10, 2013

Environment

'Dangerous Territory': Carbon Dioxide Levels Reach Milestone

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.

May 10, 2013 The amount of carbon dioxide in the atmosphere has crossed the "psychological threshold" of 400 parts per million. That number is one of the clearest measures of how humans are changing the planet by burning fossil fuels.

Transcript

On All Things ConsideredPlaylist

Shots - Health News

Enhanced Motion Perception in Autism

Did you see that?

May 10, 2013 To test a common theory about the cause of autism, researchers recently studied how kids with autism process moving images. They found that the kids saw simple movements twice as fast as their typically developing peers.

Summary

NPR thanks our sponsors

Become an NPR Sponsor

Podcast + RSS Feeds

Podcast RSS

  • Science
     
  • Research News