Archive: 07/17/2011

WWII shipwrecks could threaten US coast

On the evening of Feb. 2, 1942, an unarmed tanker with 66,000 barrels of crude oil on board was steaming in the Atlantic, about 90 miles off Ocean City, Md. Without warning, it was struck by German torpedoes. The attack set ...

Jul 17, 2011 4.3 / 5 (8) 11

What keeps the Earth cooking?

What spreads the sea floors and moves the continents? What melts iron in the outer core and enables the Earth's magnetic field? Heat. Geologists have used temperature measurements from more than 20,000 boreholes ...

Jul 17, 2011 4.6 / 5 (24) 50 | with audio podcast
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