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What are the birthstones for each month?
Birthstones are special stones associated with each month of the year. They have a place in history, mythology and science. Check out the special story of your birthstone.
September 16, 2009
Copper, where does it come from?
Astronomers use computers to study stars in the Milky Way and in a star cluster called Omega Centauri to learn more about the origin of copper.
September 16, 2009
How can some fish change from female to male?
Parrotfish an anemonefish can live for a while as male fish or female - but different hormones kick in and cause it to change.
September 15, 2009
Mylea Bayless studies bats, speaks of bat decline
Mylea Bayless said bats might face extinction due to a fungus called 'white nose syndrome.'
September 14, 2009
Jean Bahr on arsenic in drinking water
Jean Bahr suggests that water drawn from private wells be tested for arsenic and other potential toxic substances, even in the U.S.
September 14, 2009
John Goff describes how Hurricane Ike eroded Gulf Coast islands
John Goff said the most erosion from hurricane Ike occurred when the hurricane subsided, as water rushed out of an overflowing Galveston Bay, back into the Gulf of Mexico.
September 14, 2009
Could you drive fast enough to keep a sunset in view?
Is it possible to see an endless sunset? The answer depends on the speed of Earth's rotation and your precise location on the globe.
September 13, 2009
Steve Running: ‘Plants can’t counter global climate change’
Steve Running believes while Earth's plants might slow down global warming by removing CO2 from the air, he doesn't think plants offer a long-term solution.
September 7, 2009
Claire Parkinson discusses Aqua satellite data
"Prior to satellites," said Claire Parkinson, "communities would be struck by a hurricane with no warning at all. Now, satellites will pick it up."
September 7, 2009
Upmanu Lall speaks of groundwater crisis for India
Upmanu Lall explained that India has been using groundwater to support agriculture for its growing population. By 2025, many parts of India could run out of groundwater.
September 7, 2009
