"Extreme weather alerts for dangerous heat, wildfires, storms, flooding and other hazards have affected nearly everyone in the United States over the past few months."

Alexandria, Va., is almost finished digging a 2.2-mile tunnel to fix its combined sewer overflow problem..

"New analyses reveal that 4.4 billion people across low- and middle-income countries — over half of the world’s population — don’t have safe household drinking water."

"Summer now has a darker side – or rather a too-brightly burning and dangerously hot side. And that side is making summer the most dangerous season of the year. This month’s bookshelf focuses on two summer dangers: heat waves and wildfires."

"Eighty years ago, the United States and Mexico worked out an arrangement to share water from the two major rivers that run through both countries: the Rio Grande and the Colorado. The treaty was created when water wasn't as scarce as it is now."

"Watchdogs are raising new concerns about legacy contamination in Los Alamos, the birthplace of the atomic bomb and home to a renewed effort to manufacture key components for nuclear weapons."

"A significant die-off of brown pelicans in California has scientists searching for answers."

"About 68 million people in Southern Africa are suffering the effects of an El Nino-induced drought which has wiped out crops across the region, the regional bloc SADC said on Saturday."

"Hurricane Ernesto knocked out power, downed trees and flooded parts of Bermuda on Saturday but the British island territory appeared to have escaped major injuries or property damage, officials said after an initial assessment."