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Stephan Schuster suggests new strategy to help endangered species
Stephan Schuster and his team compared genes from 18 different mammoths. He discovered mammoths became less genetically diverse the got closer to extinction.
October 12, 2009
Do animals laugh, is it in animal behavior?
Do animals laugh? If you tickle a chimp, it'll make a panting noise that sounds like a handsaw cutting wood. When dogs play, they wag their tails.
October 9, 2009
Jeff Mount addresses California’s biggest water challenge
California's future as a food producer for the rest of the U.S. is tied to its water, particularly to the fresh water supply in the Sacramento-San Joaquin Delta, says Jeff Mount. Mount said over time, the levees have weakened and the ecosystem has declined - and the state will have to make difficult choices to restore the delta.
October 5, 2009
Dee Boersma on penguins as ocean sentinels
Dee Boersma said penguins can't find food as easily because of the effects of warm water on the fish they eat. Warming ocean temperatures, she said, have altered sex ratios in some populations of the fish they eat, creating more males.
October 5, 2009
Thomas Karl says humans changing atmosphere
Dr. Thomas Karl told EarthSky that the large-scale burning of fossil fuels by humans amounts to treating our planet like a giant laboratory.
October 5, 2009
How do Monarch butterflies migrate?
Monarch butterflies of eastern and central North America migrate each fall, over great distances, to the same winter homes of their great-great grandparents.
October 1, 2009
If Earth is rotating, why don’t airplanes move backwards?
As you sit on the runway, your plane is already moving at the same speed Earth spins because the Earth is rotating.
September 30, 2009
Robin Bell investigates why polar ice is melting
"To understand any process," said Robin Bell , "you have to understand it from start to end. And what we want to be able to do with ice sheets is actually model how they grow and how they collapse."
September 28, 2009
Kathy Jacobs warns climate extremes will change water access
Kathy Jacobs told EarthSky that we'll all have to adapt to climate extremes by using water more sustainably. But sustainable water use will mean different things in different places.
September 28, 2009
September 25 is Earth Overshoot Day for 2009
Today is the day on which we begin consuming more resources than Earth is producing - and producing more waste than Earth can absorb - for 2009.
September 25, 2009
