The world's biggest marine reserve in Antarctica may have to be given an expiry date to get countries with interests in the prized waters to agree to it.

Eleven Nobel Peace Prize laureates have written a letter to Russian President Vladimir Putin calling for piracy charges against environmental activists.

President Barack Obama launched a ferocious political attack on hardline Tea Party Republicans yesterday.

As the saying goes, if you're not the lead dog the view never changes, and since 1945 America has been the lead dog.