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Just two years after the Obama administration removed federal protections for wolves in the state of Wyoming, a federal judge has reinstated them, saying that the state's plan for managing the species was inadequate and largely unenforceable.

Levels of inorganic arsenic found in rice worry some, but the FDA says more study is needed before it would recommend consumers change their diets. If you're worried, vary the grains in your diet and swap out sweet potatoes for rice as baby's first food, consumer groups say.

M.C. Davis made millions gambling and buying up land and mineral rights. Now, he's restoring ecosystems destroyed by agriculture and timbering in his private preserve, one of the largest in the U.S.

Pigeons have a bad reputation. But London's Pigeon Air Patrol is monitoring pollution levels. A flock of racing pigeons equipped with sensors launched this week. The results, naturally, are tweeted.

The government of India's capital New Delhi tried an odd-even scheme for cars to curb growing air pollution. But now it says it is placing the scheme on hold for a number of months.

The University of Vermont banned the sale of bottled water on its campus in 2013 to cut down on single-use bottles in the waste stream. But the number of plastic, single-use bottles being shipped to campus went up, and students ended up using more single-use bottles and drinking less healthy beverages out of them. Now the university is trying to figure out how to balance sustainability and nutrition in on-campus beverage sales.

Plans for the transcontinental canal to be built across Nicaragua have been placed on hold. Opposition is growing and the main Chinese backer has lost a large percent of his wealth in the downturn of the stock exchange.

Volkswagen's cheating on emission tests for its diesel vehicles has not only stirred a controversy; it has also raised a question: Is there life left for diesel in the U.S.?

You may think of surfers as slackers. But in Santa Cruz, Calif., they're city council members and business owners. And they're also conservationists — who just got their piece of the central California coast named a World Surfing Reserve.

When it comes to pollinating our favorite crops — from coffee to watermelon — honeybees can't do it alone. Wild bees in the field play a critical role in creating bumper crops, a massive new study reports. But these bees are disappearing, and scientists say the rise of crop monocultures is partly to blame.