Taxonomy term

february 2009

Mining for iron oxides in coal mine sludge

The billions of tons of coal that miners extracted from Pennsylvania’s ground over the past two centuries have long gone up in smoke, but their legacy lives on in the state’s rivers and waterways. Nasty discharge — often with sky-high metal concentrations — from thousands of abandoned coal mines has been polluting Pennsylvania’s streams and groundwater.

30 Apr 2009

Benchmarks: March 1, 1872: "Bone Wars" heat up

By Brian Fisher Johnson

Edward Drinker Cope stood before a smoke-filled audience at the American Philosophical Society in Philadelphia, Pa., on March 1, 1872. One of the nation’s leading paleontologists, Cope would present his latest fossil find: an extinct flying reptile he designated Ornithochirus. Certainly the piece would be recognized as a major contribution to the scientific understanding of ancient life. More importantly, Cope thought, he would receive credit as its discoverer.

27 Feb 2009

Homo erectus footprints show modern way of walking

In the Great Rift Valley in northern Kenya, researchers have discovered a cluster of footprints that look almost exactly like those you or I might leave on a sandy beach. These prints, however, were left by early hominins more than 1.5 million years ago, making them the oldest known evidence of fully modern bipedalism.

26 Feb 2009

Down to Earth With: New congressional science fellows

Last month, a new Congress and president came to Washington, D.C. And with them came new staff, including five geoscience congressional science fellows. The fellows will take their scientific prowess to the Hill, and will use their training to work with senators, representatives and committees on policy issues. But the transition from field boot to suit jacket won’t be easy, they told EARTH reporter Brian Fisher Johnson.

23 Feb 2009

Pollutants threaten the Everglades' future

Pick Your Poison: If One Pollutant Doesn’t Take Down the Everglades, Another Might

20 Feb 2009

Energy Notes: October 2007-2008

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
20 Feb 2009

How amphibious whales returned to the sea

Millions of years ago, the first animals emerged from their watery habitat to live on dry land. After becoming fully adapted to a terrestrial environment, however, some animals, such as whales, ultimately returned to the ocean. But the evolutionary steps involved in that watery return have long been a mystery. Now, some exceptional fossils — and one really old baby — are shedding some light on how whales went back to the sea.

19 Feb 2009

Travels in Geology: The Osa Peninsula - a different side of Costa Rica

“PURA VIDA!” large block letters proclaimed as I ducked in from a late afternoon downpour into the terminal at San Jose International Airport. Above my head rose a three-story rainforest mural, topped with exuberant cardboard faces pointing to fake wildlife from a wooden gondola. I had just arrived in the Disneyland of ecotourism: Costa Rica.

17 Feb 2009

Mineral Resource of the Month: Lime

“Lime” is not itself a mineral and is never found in a natural state. Instead it is a commercial product used for millennia in everything from building construction to paper-making to fertilizer.

 
14 Feb 2009

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