Biologists armed with truck-mounted spotlights, flea spray, and anti-plague vaccine roam the South Dakota grasslands each night, five months a year, as part of a 30-year rescue mission.

With more and more carbon dioxide spewing from China, India and other rapidly growing nations, some people are asking why the U.S. should bear the expense involved in slashing our own emissions.

In Northwest Indiana, Jasper-Pulaski Fish and Wildlife Area serves as a migratory stop over for tens of thousands of Greater Sandhill Cranes.

Five years ago, the U.S. Department of Housing and Urban Development awarded Indianapolis $29 million to renovate neighborhoods with a large amount of abandoned and foreclosed properties. Today, the city says that grant has sparked $79 million in additional investments in the five communities.

Scientists suspect that warming air and rivers, as well as smaller winter snowpack, is endangering western trout. But on a ranch in Montana, methods to protect trout from the effects of cattle ranching are helping the trout become more resilient to the inevitable change in their environment.

Water from the Ogallala Aquifer is withdrawn about six times faster than rain or rivers can recharge it. Now, a group of farmers in one part of northwestern Kansas have agreed to pump 20 percent less water out of the aquifer over the next five years.

The state has designated a new nature area running through Wayne, Union and Franklin counties that will be set aside for recreation and preservation as part of the state's 200th birthday celebration.

Explorers Eddy Cartaya and Brent McGregor have used ropes, ice screws, wet suits, and flashlights to map out more than a mile of passages underneath a glacier on Oregon's Mount Hood, in what are thought to be America's largest known glacier caves outside Alaska.

The system, which has been traveling through the Gulf of Mexico, is expected to make landfall in Louisiana.

People tend to throw whole pieces of paper in the recycling bin - and fragments of paper in the trash. Research on the trend finds that we may be acting on unconscious prejudice about what is worth recycling.