"A long-delayed rule to strengthen safety requirements for pipelines that move oil and other hazardous liquids will be unveiled this month following a recent surge in accidents, the U.S. government's pipeline safety administrator said Friday."

"The Environmental Protection Agency and the California Air Resources Board claim VW deliberately programmed almost 500,000 diesel cars to emit fewer pollutants under test conditions than during actual use."

"David Letterman has lined up his first television gig since retiring from 'Late Show' in May. The comedian will appear as a correspondent in the second season of the climate change documentary series, 'Years of Living Dangerously,' which will premiere on National Geographic in October 2016, just ahead of the presidential election."

"According to a new study, published in the American Journal of Public Health, African Americans and Hispanics are more exposed to health risks like air pollution, toxic waste and a lack of green space."

"A popular fund that has supported hundreds of parks around the country is set to go away in less than two weeks, and Congressional dithering is to blame."

"The House Energy and Commerce Committee took a major step Thursday toward allowing crude oil exports from the United States."

"Pope Francis wants you to turn off the A/C."

Donald Trump's statement, during the September 16, 2015, debate, that vaccinations cause autism contradicted science and endangered human lives, doctors say. Moreover, the idea (expressed by several candidates) that scheduling childhood vaccinations less frequently than pediatricians recommend also endangers the health of children.

"The head of the Environmental Protection Agency dismissed complaints Wednesday by Republican lawmakers that her agency downplayed the seriousness of a toxic mine spill that fouled rivers in three Western states."

"Outfitting its biggest supertanker to measure the ocean's absorption of carbon dioxide was a crown jewel in Exxon's research program."