"Debra White Plume and Marie Brush Breaker Randall stood in the middle of Highway 44, alongside more than 70 other members of the Oglala Lakota Nation. For hours, they didn't budge -- much to the chagrin of some tractor-trailer drivers bound for the tar sands region of Alberta, Canada."

"Metro Detroit’s poor and minority populations face greater health and environmental challenges than most communities because of their proximity to industrial pollution - an “environmental injustice” and “human rights abuse,” Sierra Club Detroit officials said today as they released a report on the state of Detroit’s environment."

"James E. Hansen, the climate scientist who issued the clearest warning of the 20th century about the dangers of global warming, will retire from NASA this week, giving himself more freedom to pursue political and legal efforts to limit greenhouse gases."

"AKWESASNE — A $20 million settlement may remedy nearly 60 years of environmental pollution to the St. Regis Mohawk Reservation."

"The level of diversity, both in leadership and staff, of groups such as the National Resources Defense Council (NRDC), the Sierra Club and the Chesapeake Bay Foundation [, many say,] is more like that of the Republican Party they so often criticize for its positions on the environment than that of the multiethnic Democratic Party they have thrown their support behind."

"The number of people living in extreme poverty could increase by up to 3 billion by 2050 unless urgent action is taken to tackle environmental challenges, a major UN report warned on Thursday."

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