Rescue teams searched Thursday for hundreds of missing people along the Nepal-China border, where a deadly torrent of water and mud several stories high swept through communities a day earlier following a glacier collapse.

Extreme heat is the deadliest weather-related threat in the U.S. In Phoenix, heat kills more people than homicides each year. So the city is turning to an unlikely lifesaver: bags of ice. And the fire department is creating a new model in the battle against heatstroke. For our series, Tipping Point, Ben Tracy of Climate Central shows how this low-tech approach is saving lives.

July was the driest month on record for San Juan in more than 120 years and the second hottest for the island's capital.