May 2012 second-warmest on record

It was a warm Northern Hemisphere spring, overall, according to the State of the Climate Global Analysis from NOAA and the National Climatic Data Center of May 2012.

Seven critical issues need attention at Rio+20, officials say

Officials preparing for Rio+20 have identified seven critical issues to ensuring global sustainability: jobs, energy, cities, food, water, oceans and disaster readiness.

Global fire risk is increasing

North America and most of Europe could see a global fire risk by century's end. But fire activity could decrease around equator, because of increased rainfall.

Noctilucent or night shining cloud season begins for 2012

The brief season for night shining noctilucent clouds has arrived, NASA says. A photographer spotted these a few days ago.

Carlotta weakened as made landfall on Mexico’s coast

At least two children are reported to have died after Carlotta destroyed a clay house Friday night in Pluma Hidalgo.

Hurricane Carlotta threatens Mexico

Hurricane Carlotta is getting closer to the Pacific coast of Mexico and is gaining strength. All residents should be weather ready for this intensifying storm.

How big is Africa, really?

You thought you knew how big Africa was. But, chances are, you didn't know. So how big is Africa?

Cannibal lemur is all ew and no aw

Lemurs eating lemurs. Is it a cannibal lemur? Is this normal?

Tornado caught on video in Venice, Italy

Three videos from June 12 tornado, which narrowly missed Venice, Italy.

Personality is determined by Bird’s head color

The personality of red-headed Gouldian finches have aggressive tendencies, while birds with black heads are bold and take more risks than their peers.