Environment

After being frozen for thousands of years in a Siberian riverbed, this pristine mammoth tusk is a financial boon to the hunter who found it.

As Arctic Ice Melts, It's A Free-For-All For Oil ... And Tusks

11:47am April 23, 2013

by NPR Staff

The melting of ice in the northern latitudes is feeding new industries. Among them: speculating for petroleum products where vast amounts of undiscovered oil and natural gas are believed to be, and hunting for mammoth tusks unearthed in the softening tundra.

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Members of the research team fend for themselves in a communal kitchen (while fending off persistent ants) before heading out for a challenging day on the reef.

This Scientist Aims High To Save The World's Coral Reefs

9:52pm April 22, 2013

by Richard Harris

Ken Caldeira is trying to come up with a big solution to the problem of increasingly acid oceans: antacids for coral reefs. That might keep the reefs from being destroyed by humans' use of fossil fuels. And that's not his only big idea. But even Caldeira admits that his audacious plan could fail.

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Photovoltaic cells on the office building's roof.

This Building Is Supergreen. Will It Be Copied?

10:18am April 22, 2013

by Wendy Kaufman

The Bullitt Foundation's new Seattle headquarters, billed as the world's "greenest" building, is designed to be entirely self-sustaining. The developers hope it can inspire others to build this way.

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Lionfish, like this one spotted in the Bahamas, are a nonnative predatory fish that can decimate native fish populations.

Lionfish Attacking Atlantic Ocean Like A Living Oil Spill

1:45pm April 18, 2013

by Elizabeth Shogren

Scientists say they have few weapons to wield against the poison-spined lionfish, which is gobbling up reef fish in the Bahamas and other habitats.

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A glass-bottomed boat glides along water in Silver Springs, Fla. The springs, once a major tourist destination, have declined both in volume and in water quality.

Now Endangered, Florida's Silver Springs Once Lured Tourists

5:24pm April 13, 2013

by Greg Allen

Countless movies were filmed there, including Tarzan and Creature From the Black Lagoon. With its wildlife and freshwater springs, Silver Springs in Central Florida was one of the state's most popular tourist destinations. Those waters have receded now as the delicate ecosystem suffers from problems that threaten the entire state.

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Monitoring the Monarchs

1:03pm April 12, 2013

Last month monarch butterflies began an annual northward journey from their overwintering habitat in Mexico. Monarch expert Lincoln Brower discusses the dwindling monarch populations, and explains how habitat loss in Mexico and a decline in milkweed plant numbers in the U.S. may be harming the familiar orange and black fliers.

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Thick jets of processed sewage arc out 30 to 40 feet from giant moving spreaders at Birmingham Farm in Kansas City, Mo.

Cities Turn Sewage Into 'Black Gold' For Local Farms

12:07pm April 12, 2013

by Frank Morris

Cities are finding beneficial and lucrative ways to dispose of solid waste, while also helping farmers. But a lot of sewage still ends up in landfills or being processed at big, industrial incinerators.

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A decal advertising E85 ethanol is displayed on a pump at a gas station in Johnston, Iowa.

EPA's Push For More Ethanol Could Be Too Little, Too Late

8:50am April 05, 2013

by Tracy Samilton

The U.S. Environmental Protection Agency could soon issue a final ruling that aims to force oil companies to replace E10, gasoline mixed with 10 percent ethanol, with E15. This move could come just as widespread support for ethanol, which is made from corn, appears to be eroding.

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This bur oak, called "The Big Tree" by Missouri locals, has been around for centuries. When a drought hit the state last year, the community came together to offer help and water for the iconic tree.

Environment

In Missouri, Days Of Drought Send Caretakers To One 'Big Tree'

10:52am April 04, 2013

by Peggy Lowe

Before the American Revolution, a huge tree has been standing in central Missouri, growing to 90 feet tall. The beloved bur oak, which everybody calls "The Big Tree," has survived all kinds of punishments during 350 years on the prairie. But last year's record drought was rough on the tree, causing it to wilt and alarming two locals who nursed it back to health.

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Spilled crude oil is seen in a drainage ditch near evacuated homes near Starlite Road in Mayflower, Ark., on March 31. An Exxon Mobil pipeline carrying Canadian crude oil was shut off after it ruptured March 29, causing an evacuation of 22 homes.

Arkansas Oil Spill Sheds Light On Aging Pipeline System

10:45am April 04, 2013

by Elizabeth Shogren

More than half of the nation's pipelines were built before 1970. In fact, ExxonMobil's Pegasus pipeline, which burst Friday in Mayflower, Ark., is 65 years old. According to federal statistics, pipelines have on average 280 significant spills a year. Most aren't big enough to make headlines.

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