"Hundreds of top scientists warned on Tuesday against Republican presidential nominee Donald Trump's vow to pull the United States out of the Paris climate-warming accord if elected in November."

"The U.S. Securities and Exchange Commission is investigating how Exxon Mobil Corp. values its assets in a world of increasing climate-change regulations, a probe that could have far-reaching consequences for the oil and gas industry."

"Federal auto safety regulators on Monday made it official: They are betting the nation’s highways will be safer with more cars driven by machines and not people."

"How an esoteric piece of farm equipment created America’s breadbasket—and threatens to destroy it."

"U.S. EPA [Monday] released the final version of closely watched guidelines intended to make it easier for states to get a pass on air pollution violations outside their control because of 'exceptional events.'"

"The 27 states challenging Obama’s Clean Power Plan in court say the lower emissions levels it would impose are an undue burden. But most are likely to hit them anyway."

"In the waters off the coast of Hawaii, a tall buoy bobs and sways in the water, using the rise and fall of the waves to generate electricity. The current travels through an undersea cable for a mile to a military base, where it is fed into Oahu's power grid — the first wave-produced electricity to go online in the U.S."

"Four of the country's largest chemical companies have been accused of selling billions of dollars worth of harmful isocyanate chemicals but intentionally concealing their dangers to consumers and the U.S. Environmental Protection Agency (EPA) over the past several decades."

"Work on Energy Transfer Partners LP’s Dakota Access pipeline will be temporarily stopped while an appeals court considers an emergency request by a Native American group claiming the project could destroy or damage sacred land."

"New York attorney general’s probe focuses on why Exxon is only oil firm not to write down value of assets amid price rout".