Global warming is driving tropical plant and animal species to higher altitudes, potentially leaving lowland rainforest with nothing to take their place, ecologists argue in this week's issue of Science.

As Earth's climate has warmed in recent decades, the geographical ranges of well-studied bird, butterfly, and plant species in the US and Europe have moved northward, following the gradual northward shift of ...

As that great pundit Kermit the Frog once famously mused, it's not easy being green.

Because elements of this system are poorly understood and poorly represented in global climate models, collecting real-time, complementary data from a variety of areas will go a long way toward improving ...

More than half the colonies of Antarctica's penguins, including emperor penguins made famous by the Hollywood film "Happy Feet", face decline or being wiped out if the world warms by 2 degrees Celsius.

A look at some of the positions of the presidential candidates on energy and global warming: Republican John McCain: -Favors building 45 nuclear power reactors by 2030.