75,000 people per square mile? These are the most densely populated cities in the world

U.S., Colombia vow to battle record surge in coca production

President Trump has threatened to decertify Colombia as a partner in the war against drugs

        

Ex-president of Argentina faces arrest over alleged bombing coverup

A judge has requested her judicial immunity be lifted.

        

What do lions really want? Some stability

Mara Lion Project director Nic Elliot talks about steps taken to save lions, and what the rest of us can do to help.