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Ecological credit crunch as human footprint expands
An ecological credit crunch: According to the Living Planet Report, we're using resources and producing waste 30% higher than Earth can renew and absorb.
October 29, 2008
Polar melting consequences: Learn more here
Polar research scientist Ginny Catania responds to a Brazilian student's question, and explains why what happens at the poles can have global impacts.
October 28, 2008
Sheep: The new weapon against invasive plants
What’s better than spraying herbicides on a field full of non-native weeds? Setting a herd of sheep loose on it...
October 27, 2008
Engineers turn to nature for grand challenges
Calestous Juma of Harvard University reports that some of the best engineers in the world are coming together to tackle environmental problems in order to increase food and water supplies in the developing world.
October 27, 2008
Michael Ramsey watches volcanoes from space
Volcanologist Michael Ramsey studies volcanoes both up close and with images from NASA's Terra satellite. Listen to him discuss the search for signs of volcanic eruptions in this 8-minute podcast.
October 27, 2008
DIY solar power motorcycle of the future
An electric, solar power motorcycle that began as a hobby is now reality. Learn more about the futuristic vehicle here.
October 27, 2008
First humans in China 1.7 million years ago
Stone tools and 2 front teeth, found decades ago, were recently dated by paleoanthropologists. It's evidence that the first humans arrived in China 1.7 million years ago.
October 26, 2008
Ocean current stripes discovered by scientists
Scientists have never had an accurate map of ocean currents, until now. Hear about Peter Niiler's recent discoveries about ocean currents and climate.
October 25, 2008
Robots pump more iron with fuel-powered muscles
Nanoscientist Ray Baughman is steering humanoid robots towards a power system that mimics our own human muscles and doesn't need to be plugged in to recharge.
October 24, 2008
Sleep needed to downscale the brain’s synapses
Chiara Cirelli is working to understand the function of sleep. She believes we need sleep to refresh our synapses, which connect brain cells.
October 23, 2008
