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Near Bradshaw, Nebraska, the four Harrington sisters fight the Keystone XL pipeline, which they fear could threaten land their family has farmed for 150 years. Their unpainted, solar-powered barn, plastered with slogans, sits smack in the path of the pipeline.

Since taking office, the Obama administration has vowed to restore science as the basis for health findings on the toxic chemicals in commerce. But politics -- based on strong lobbying and finagling by the chemical industry -- seems to have thwarted the administration's declared intentions. "In the past three years, the EPA has assessed fewer chemicals than ever. Last year, it completed only one assessment. Today, the agency has even embraced measures sought by the chemical industry that have led to endless delays."

"The current Ebola crisis has taken a terrific toll in West Africa, stressing budgets, stretching fragile health systems to the breaking point and leaving more than 8,600 people dead since it returned to the region early last year. But seldom noted is the toll Ebola has taken on some of the world’s most endangered creatures — the great apes."

"President Obama said he will nominate the Environmental Protection Agency’s (EPA) acting deputy chief to take the position officially."

"Billionaire activist Tom Steyer won’t run for the U.S. Senate in 2016, saying Thursday he will instead concentrate on electing a Democratic president and in continued activism on his signature issue of climate change."

"Boston's aging pipeline network leaks about $90 million worth of natural gas each year, marking a sizeable financial loss and a threat to the environment, according to a study released on Thursday by Harvard researchers."

"The United Nations asked governments on Thursday to submit plans to cut greenhouse gas emissions as the building blocks of a deal due in Paris in December to limit global warming, after scientists said 2014 was the hottest year on record."

"The Bulletin of the Atomic Scientists says Earth is now closer to human-caused doomsday than it has been in more than 30 years because of global warming and nuclear weaponry. But other experts say that's way too gloomy."