For the first time in 150 years, a bison has been born on native prairie in Iowa within a herd established exclusively for conservation.

To help support this critical work, Disney will plant 2.7 million trees in the Atlantic Forest -- one for each person who saw the film EARTH during its opening week.

Get Outside to Celebrate Earth Day - April 22, 2009

The pace of global warming is likely to be much faster than recent predictions, because industrial greenhouse gas emissions have increased more quickly than expected and higher temperatures are triggering self-reinforcing feedback mechanisms in global...

Sea turtles are in trouble. Worldwide, six of the seven species of sea turtles -- all but the Australian flatback -- are listed as endangered, and some populations are critically close to extinction.

These stunning images show mysterious columns of light streaming into the sky above the town of Sigulda in Latvia at the end of last month. Taken by designer Aigar Truhins with a standard digital camera, the photographs have prompted excited

As a startling reminder of just how ancient the island is, a fully intact mammoth tusk was discovered on Santa Cruz Island in early January 2009. Several other bones, including ribs and possibly a femur, were found near the four-foot-long tusk.

it would mean the tusked beasts roamed 62,000-acre Santa Cruz Island more widely than previously thought.

After some not too suspenseful waiting, here it is. The official debut of the 3rd generation Toyota Corporate Social Responsibility Rating Prius hybrid!

In 2004, searchers recorded a brief video clip showing what many scientists believe to be the ivory-billed woodpecker, long considered extinct. But four years and many search parties later, no additional proof of the bird's existence has emerged.