"It has killed millions of fish and hundreds of dolphins and manatees. It has ruined countless Florida beach vacations. And it has left people with respiratory problems gasping for air. Yet until now, how Red Tide's poisons worked remained something of a mystery."

In 1961, three young nuclear plant operators in Idaho were killed when a small experimental power reactor melted down. They were so radioactive they had to be buried in lead-lined coffins under concrete. And one bereaved family was only allowed a five-minute funeral.

"The U.S. Environmental Protection Agency has agreed to grant a petition by three nonprofit organizations to withdraw its approval for the potent greenhouse gas HFC-134a to be used in new automobile air conditioning systems."

The Nuclear Regulatory Commission currently requires nuclear plants to plan evacuation of a 10-mile circle in case of a radiation threat. But the government urged evacuation of a 50-mile circle after the disaster at Japan's Fukushima plant. Here's some information to help you calculate your own risk.

"A sleepy New Jersey town has popped onto people's radar screens because it has the oldest running nuclear power plant in the United States -- and, some say, the most dangerous."

"At the supermarket, most shoppers are oblivious to a battle raging within U.S. agriculture and the Obama administration’s role in it. Two thriving but opposing sectors — organics and genetically engineered crops — have been warring on the farm, in the courts and in Washington."

"Charging up electric vehicles on the road is easier and more convenient now that Google has started adding charging station locations to the Google Maps platform."

The forensic analysis of the Deepwater Horizon's blowout preventer revealed that a buckled drill pipe fouled the unit's blind shear ram, preventing it from sealing off the well.

"The threat of the release of highly radioactive spent fuel at a Japanese nuclear plant has revived a debate in the United States about how to manage such waste and has led to new recriminations over a derailed plan for a national repository in Nevada."

"With remnants of once-legal lead paint, leaded gasoline and other pollutants from the nation's industrial past tainting land in U.S. cities, soil researchers warn that the growing number of urban farmers and community gardeners need to test their dirt and take steps to make sure it's safe."