"Republican presidential contender Donald Trump said on Tuesday he would renegotiate America’s role in the U.N. global climate accord, spelling potential doom for an agreement many view as a last chance to turn the tide on global warming."

"Leading lawmakers in the House and Senate said Tuesday evening they are in the final stages of hammering out a compromise bill to reform federal chemical safety standards."

"Grand Canyon National Park Superintendent Dave Uberuaga, who has shouldered responsibility for not acting more aggressively in response to long-running allegations of sexual harassment in the park, has announced his retirement rather than accept a move to the National Park Service's Washington headquarters."

"A UN panel that on Tuesday ruled that glyphosate was probably not carcinogenic to humans has now become embroiled in a bitter row about potential conflicts of interests. It has emerged that an institute co-run by the chairman of the UN’s joint meeting on pesticide residues (JMPR) received a six-figure donation from Monsanto, which uses the substance as a core ingredient in its bestselling Roundup weedkiller."

"Until recently, the fight over Roundup has mostly focused on its active ingredient, glyphosate. But mounting evidence, including one study published in February, shows it’s not only glyphosate that’s dangerous, but also chemicals listed as 'inert ingredients' in some formulations of Roundup and other glyphosate-based weed killers. Though they have been in herbicides — and our environment — for decades, these chemicals have evaded scientific scrutiny and regulation in large part because the companies that make and use them have concealed their identity as trade secrets."

"WASHINGTON -- The nation's top foresters on Tuesday warned of another hot, dry and costly wildfire season in 2016 with global climate change, droughts and more people living in the woods leading to more acres and more homes burned in more states."

"The Senate voted on Tuesday to advance $1.1 billion in emergency financing to combat the mosquito-borne Zika virus — less than the $1.9 billion requested by the White House, and setting up a confrontation with House Republicans who have put forward a plan with just $622 million reallocated from other programs."

"Genetically engineered crops appear to be safe to eat and do not harm the environment, according to a comprehensive new analysis by the advisory group the National Academies of Sciences, Engineering and Medicine."

"Saying the Virgin Islands' racketeering investigation 'appears to be driven by ideology, not law,' states file in support of company in Texas court. "

"The top law enforcement officials of Texas and Alabama are jumping in on the side of ExxonMobil, objecting to a racketeering investigation of the oil giant by the attorney general of the U.S. Virgin Islands.

"The U.S. Supreme Court on Monday rejected Exxon Mobil Corp's appeal of a $236 million judgment against the oil company in a case brought by the state of New Hampshire over groundwater contamination linked to a gasoline additive."