In July, the surface of Greenland's ice sheet melted at an unusually fast rate. In the span of four days, an estimated 97 percent of the ice disappeared. Audie Cornish talks to NASA scientist Tom Wagner for more.
The Montgomery County Planning Board approved new zoning restrictions for "mega" gas stations like the one planned for a Costco in Wheaton, but the buffer approved is less than residents would have liked.
Western Wisconsin counties bordering the Mississippi River have a unique geography: steep bluffs with layers and layers of silica sand. The sand is extremely valuable because it's strong enough to prop open underground veins in shale fields so oil and natural gas can be released. It's called "frac sand," and Wisconsin appears to have more of it than any other state. But the hills are private property, so sand mining companies have to negotiate with local farmers — not all of whom are on board.
Florida's Aquarius Reef Base is the only working undersea lab left today. But now that federal funds have dried up, it may be forced to surface. Oceanographer Sylvia Earle joins Science Friday from inside Aquarius, 60 feet underwater, to talk about sponges, corals and other life she's observed on the reef.
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