Today's Top 5 Trending: US-Canada Climate Commitments, Houston's Hurricane Threat, Lead in Wells, CA's Stormwater, Lesser-Known National Parks

Obama and Trudeau Unveil Climate Efforts

President Obama and Canadian Prime Minister Justin Trudeau announced Thursday morning new commitments to reduce planet-warming emissions of methane, a chemical contained in natural gas that is about 25 times as potent as carbon dioxide and that can leak from drilling wells and pipelines. - New York Times

'We're Sitting Ducks'

Houston, home to millions of people and one of the largest shipping lanes in the world, is unprepared for the hurricane that could bring ecological and economic disaster. - Pro Publica

The Corrosive Dangers Lurking in Private Wells

Across the country, millions of Americans served by private wells drink, bathe and cook with water containing potentially dangerous amounts of lead, Reuters reporting and recent university studies show. - Reuters

Parched California Tries to Grab Stormwater Before It Escapes

A network of basins and wells, designed by geologists, can channel storm runoff into natural underground vaults before it vanishes into the sea. - Scientific American

National Parks: Where We Go and Don't Go

Much of the Park Service’s land in the West is poorly visited and little-known. - High Country News