"Rudolph’s red nose may have gone down in history, but research says it was probably his shining blue eyes — a common trait among reindeer — that helped keep him and the rest of Santa’s herd nourished."

"Working from home can cut your employment-related carbon footprint by more than half, a study found."

"When a toilet is flushed in California, the water can end up in a lot of places: An ice skating rink near Disneyland, ski slopes around Lake Tahoe, farmland in the Central Valley. And — coming soon — kitchen faucets."

"Federal regulators are discouraged from speaking up about potentially dangerous pesticides, according to a former agency official."

"BlueTriton Brands owns Poland Spring, Arrowhead and other bottled water brands. As it tries to grow, experts worry sensitive springs, creeks and groundwater supplies from Florida to California are paying the price."

"Somewhere on a remote mountainside in Colorado’s Rockies, a latch flipped on a crate and a wolf bounded out, heading toward the tree line. Then it stopped short. For a moment, the young female looked back at it’s audience of roughly 45 people who stared on in reverential silence. Then she disappeared into the forest."

"Environmental advocates and industry groups pointed out that any reduction in leasing area would make clean energy and emissions reduction targets more difficult to achieve."

"Some U.S. school districts face a learning curve in ditching their dirty diesel buses — even with big federal subsidies. But the challenges are solvable."