"March is Women's History Month, and HuffPost Green is honoring female environmentalists that have helped defend the planet."

"Thousands of anti-nuclear protesters have gathered across Japan. The rallies come on the eve of the two-year anniversary of an earthquake and tsunami that caused the Fukushima disaster."

"BILLINGS, Mont. -- Environmental groups filed a federal lawsuit Wednesday against the owners of Montana's massive Colstrip coal-fired power plant, seeking to force the installation of more pollution controls at the decades-old facility."

Tens of thousands of fishermen and activists have written the Food and Drug Administration, which is considering approving genetically engineered salmon as food. They worry the giant fish could escape into the wild and interbreed with natural salmon.

"Environmentalists have a hope. If they can block the Keystone XL pipeline, they can keep Canada from developing more of its dirty tar sands oil. It takes a lot of energy to get it out of the ground and turn it into gasoline, so it has a bigger greenhouse gas footprint than conventional oil. But the State Department report, which was released Friday, says Keystone won't have much of an impact on the development of that oil from Alberta."

"A US court has declared the conservation group Sea Shepherd to be 'pirates' and ordered it to stop its aggressive actions against Japanese whalers."

Two retired outdoorsmen -- with help from water researchers -- are testing streamwater in western Pennsylvania. They are struggling to get EPA attention to chemicals they fear could be related to the fracking boom.

"Sea Shepherd is claiming victory after Japan temporarily suspended its annual whale hunt in the Southern Ocean."

"Fresh off a wave of success in the California Capitol last year, animal welfare groups are taking aim at a new target this year: hunting with lead ammunition."