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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
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
Black hole at the center of our galaxy
Astronomers believe there's a supermassive black hole in the center of our Milky Way galaxy. The orbits of stars near the center reveal a huge amount of mass inside a very small volume.
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
Will we ever fully understand ourselves?
Will we ever fully understand ourselves? This is a very philosophical question.
September 11, 2009
What causes the hiccups?
You might get hiccups if you laugh too hard, or eat spicy food, or if your stomach becomes bloated. And everyone has a favorite hiccup remedy.
September 9, 2009
Stars, how big can they get?
The theoretical size limit for the biggest stars keeps going up! We know of stars between between 60 and 100 times as massive as our sun.
September 9, 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
Mark Mehos explains Concentrating Solar Power technology
Mark Mehos believes this technology - known as CSP - is particularly promising because it can store up energy to be used on cloudy days.
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
