If you lived in New Orleans or New Jersey during the fallout from hurricanes Katrina and Sandy, resilience in the face of extreme weather isn't an abstract concept.

The top of the world is turning from white to blue in summer as the ice that has long covered the north polar seas melts away.

There isn’t enough data available to indicate that, on average, "green buildings" save more energy than conventional buildings.

It’s one of the great — and unresolved — debates of Antarctic science.

As the infrastructure for energy supply and demand continues to develop around the world, it will be critical to strengthen its resilience in order to withstand and mitigate risks to ensure supply to support economic growth.

At its most basic, transportation refers to a system or means of transporting people or goods. But effective, efficient, equitable transportation encompasses so much more.

The Arctic sea ice, which polar bears depend on for survival, is shrinking.

The booming industrial center of Shenzhen is a showcase for Chinese efforts to cut CO2 emissions and make the nation's burgeoning cities more livable.

Putting a price on carbon is an idea whose time has come, with even Big Oil signaling it may drop its long-standing opposition to a carbon tax.

A Russian river located by the Arctic town of Norilsk turned bright red Tuesday, looking more like an enormous blood vessel than a body of water.