Science

11:37am

Sat August 17, 2013
The Two-Way

Mid-Atlantic Dolphin Die-Off Leaves Scientists Puzzled

Originally published on Sat August 17, 2013 7:25 pm

An Atlantic bottlenose dolphin at the Dolphin Research Center on Grassy Key in Marathon, Fla., in July.
Wilfredo Lee Associated Press

Dead dolphins have been washing up in alarming numbers on mid-Atlantic beaches since July as scientists struggle to find a cause for the largest such die-off in a quarter-century.

Read more

9:22am

Sat August 17, 2013
The Two-Way

NASA: Meteor In Russia Threw Up Globe-Girdling Plume Of Debris

Originally published on Sat August 17, 2013 8:19 pm

A meteor trail is seen above a residential apartment block in the Urals city of Chelyabinsk on Feb. 15.
AFP/Getty Images

The bus-sized meteor that slammed into Russia in February, causing a massive shock-wave and injuring hundreds of people, sent a plume of dust into the stratosphere that circled the globe in just four days and lingered for months, NASA says.

The Feb. 15 meteor at Chelyabinsk near Russia's southern border with Kazakhstan measured 60 feet across and weighed 12,000 tons. It detonated 15 miles above the city.

Read more

7:55am

Sat August 17, 2013
Environment

Dolphin Deaths Alarm Scientists

Originally published on Sun August 18, 2013 7:35 am

Transcript

SCOTT SIMON, HOST:

Dolphins are washing ashore in alarming numbers in the Mid-Atlantic states this summer. More than 160 deaths of dolphins have been reported since early July and that's the worst fate in 26 years. Response teams from New York to Virginia are trying to determine just what's killing all these dolphins. Charlie Potter is working with one of those teams at the Virginia Aquarium and Marine Science Center.

Read more

5:44pm

Fri August 16, 2013
Research News

N. America's Oldest Known Petroglyphs Discovered In Nevada

Originally published on Fri August 16, 2013 6:22 pm

Courtesy of Larry Benson

Ancient North Americans gouged elaborate rock art into a heap of big boulders northeast of Reno, Nev., more than 10,000 years ago and perhaps 15,000 years ago. That makes the carvings the oldest known petroglyphs on the continent, according to a paper published in the Journal of Archaeological Science.

Read more

11:56am

Fri August 16, 2013
Performing Arts

Experimenting on Consciousness, Through Art

Performance artist Marina Abramovic's piece Measuring the Magic of Mutual Gaze is both art installation and science experiment, in which volunteers sit facing one another while having their brain waves measured. Abramovic discusses these arts and science experiments with neuroscientist Christof Koch, an expert in consciousness.

11:56am

Fri August 16, 2013
Environment

For a Greener Yard, Lose the Lawn

Across the Southwest, cities are banning water-thirsty front lawns. Cado Daily of the University of Arizona's Water Wise Program views that as an opportunity to plant a "rainscape" — a yard with drought-friendly native plants that she says can look as lush as a lawn, and lure wildlife back, too.

11:56am

Fri August 16, 2013
Energy

Strengthening the Grid, Ten Years Later

Ten years ago this week, a massive electrical blackout struck the northeastern US and parts of Canada, affecting some 55 million people. IEEE Spectrum journalist Bill Sweet describes the causes of the outage and how the electrical grid has changed since the 2003 failure.

11:56am

Fri August 16, 2013
Education

The STEM Gender Gap

The number of girls and women studying the sciences has steadily increased each year, but there is still a gender gap in higher education and the work force. Researchers Andresse St. Rose and Catherine Riegle-Crumb and Linda Kekelis, executive director of Techbridge, discuss the social and environmental factors that contribute to this disparity.

11:56am

Fri August 16, 2013
Technology

Hyperloop: Hype or Future Transportation?

Elon Musk, founder of SpaceX and Tesla Motors, unveiled his designs for Hyperloop. The high-speed transit system could make the 400-mile trip from San Francisco and Los Angeles in 30 minutes. Tim De Chant, senior digital editor at NOVA, discusses the plans and whether the system could answer our transit problems.

11:45am

Fri August 16, 2013
The Salt

Eating On Mars? Be Sure To Pack The Tortillas

Originally published on Fri August 16, 2013 4:27 pm

Mission to Mars: Six explorers lived in this simulated Mars habitat in Hawaii for four months, part of a NASA study to test the role of cooking and food on an extended space mission.
Sian Proctor NASA HI-SEAS

After several months of freeze-dried food, even the most committed carnivores would probably reach for the fresh produce.

So it's no surprise that the six explorers who were cooped up studying space-friendly foods on a simulated mission to Mars for the past four months went right for the mangoes and pineapple during their first meal outside their habitat Aug. 13.

Read more

Pages