Nearly 200 nations have reached a deal to limit the use of greenhouse gases far more powerful than carbon dioxide.

By Bradley Klapper and Ignatius Ssuuna, Associated Press

Thousands of Rwandans filled the Amahoro Stadium in the capital city of Kigali Monday for a memorial service to mark the 20th anniversary of the genocide, in which Hutu extremists killed nearly a million Tutsis and moderate Hutus in 100…

By Simone Pathe