Wolves back in Yellowstone benefit the ecosystem, scientists say

Gray wolves returned to Yellowstone 15 years ago. Amid controversy, scientists say these top predators are keeping elk at bay and helping ecosystems flourish.

White Christmas in 2011?

White Christmas in 2011? Those in the southwestern United States and higher elevations such as mountain ranges probably have the best chances in 2011.

Drought in Texas kills around 10% of trees

Drought in Texas has killed up to 10% of the state's trees. This may increase wildfire danger because the dead trees provide fuel.

Blizzard expected for central US, in satellite photos

Three more amazing pictures taken from space on December 19, 2011, showing severe weather - a blizzard - poised to strike the central US.

Blizzard conditions expected across the central U.S.

Area of low pressure across New Mexico will trigger blizzard conditions and severe weather across the central United States early this week.

Tropical Storm Washi kills hundreds in the Philippines

Tropical Storm Washi - known in the Philippines as Sendong - brought flooding and mudslides that resulted in over 650 deaths and 800 still missing.

140 new species described in 2011

There are still plenty of places to explore and things to discover on Earth, these scientists say. They described t 140 new species for 2011.

Elephant seal travels 18,000 miles

In less than one year, an elephant seal nicknamed Jackson traveled an astonishing 18,000 miles. That's the equivalent of New York to Sydney and back again.

Will the new NOAA winter outlook prove true?

The original NOAA winter outlook for the 2011-2012 season has not held up. NOAA has released another prediction. Will it do better?

Blue holes are hotspots of microbial biodiversity

Scientists discovered unique and diverse microbial communities during a cave diving expedition to blue holes in the Bahamas.