In a far-reaching speech in Bolivia on Thursday, Pope Francis offered his apologies to, and begged forgiveness from, the native people of the Americas as he acknowledged…

Michael B. Gerrard, associate faculty chair at Columbia University’s Earth Institute, is the Andrew Sabin professor of professional practice and director of the Sabin Center for…

The Atacama desert region of northern Chile, one of the driest areas on Earth, has been hit in recent days by torrential rains and floods…