A Secret Service agent has been fired after his ex-girlfriend revealed that he took her to the Obamas' Hawaii estate to have ...

How much land, water, and other resources does our lifestyle require? And how can we adapt this lifestyle to stay within the limits of what the Earth can give? A new article tackles these questions.

With eight billion people, we use a lot of the Earth's resources in ways that are likely unsustainable. Klaus Hubacek, ...

Geologists found evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of ...