Not long after touchdown, the Curiosity rover tested its ChemCam instrument by blasting a nearby rock with a laser. Now it's rolling toward Glenelg, a rocky area in the Gale Crater, to do more zapping and some drilling. Mars Science Lab deputy project manager Richard Cook talks about what the rover might find.
The documentary film 'Carbon Nation' aims to get viewers to make more climate-friendly energy choices but director Peter Blyck says he isn't trying to change anyone's views on climate change. Byck discusses the film, and his "common sense" approach to curbing CO2 emissions.
Reporting in Science, researchers write that many of today's most widely spoken languages, like English, Spanish and Hindi, can be traced back to ancient tongues in present-day Turkey. Evolutionary biologist Quentin Atkinson talks about investigating language evolution using the same methods geneticists use to trace flu virus outbreaks.
Tom Swetnam says tree rings tell the tale of how climate, fire and people interacted hundreds and thousands of years ago. Today that interaction continues, and Swetnam says climate change is causing earlier snowmelt--which can lead to bigger, hotter blazes. Brett Fay joins to talk about predicting the movements of a wildfire.
Giant predatory worms, 50-foot algae, sea spiders and leopard seals are some of the creatures living between the ice and snow of Antarctica. A leading expert on Antarctica explains what's in this fragile ecosystem and why it's under attack.
A century ago, Nikola Tesla was a world-famous wizard of electrical engineering. But he fell into obscurity, and his lab on Long Island, N.Y, which was supposed to be his crowning achievement, has long sat derelict. Now a crowdsourcing campaign has brought out donations from Tesla fans around the world.
Climate change is exaggerating the normal swings in weather. For the American Southwest, that means more intense waves of heat, drought and fire that could wipe out trees that have stood for centuries. It's already revamping the ecology of the landscape.
Mitt Romney unveiled his plan Thursday to eliminate North America's dependence on foreign energy by 2020. The plan would end subsidies for renewable energy sources and instead rely heavily on fossil fuels from the U.S., Mexico and Canada. Not discussed were the immediate or long-term effects on climate change.
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