Environment

Travis White, Utah Department of Transportation, Highway Incident Management Team, holds their drone at a drone demo Monday, May 20, 2019, in Park City, Utah. In Utah, drones are hovering near avalanches to watch roaring snow. In North Carolina, they're searching for the nests of endangered birds. In Kansas, they could soon be identifying sick cows through heat signatures. Public transportation agencies are using drones in nearly every state, according to a new survey released on Monday, May 20, 2019 by the American Association of State Highway and Transportation Officials. (AP Photo/Rick Bowmer)

In this April 8, 2019, photo, Tim Tanksley, who has been fighting for years trying to convince Oklahoma lawmakers to crack down on the coal ash dumping, stands outside a dump site in Bokoshe, Okla. President Donald Trump’s EPA has approved Oklahoma to be the first state to take over permitting and enforcement on coal-ash sites. “They’re going to do absolutely nothing,” Tanksley said. (AP Photo/Sue Ogrocki)

Australian Prime Minister Scott Morrison speaks to party supporters flanked by his wife, Jenny, second left, and daughters Lily, right, and Abbey, after his opponent conceded in the federal election in Sydney, Australia, Sunday, May 19, 2019. Australia's ruling conservative coalition, lead by Morrison, won a surprise victory in the country's general election, defying opinion polls that had tipped the center-left opposition party to oust it from power and promising an end to the revolving door of national leaders. (AP Photo/Rick Rycroft)

Australian opposition leader Bill Shorten and his wife Chloe eat a sausage sandwich on a federal election day in Melbourne, Australia, Saturday, May 18, 2019. Polling stations opened across Australia on Saturday in elections that are likely to deliver the nation's sixth prime minister in as many years. (AP Photo/Andy Brownbill)

FILE - This Jan. 12, 2017, file photo shows gas gathering plant on a hilltop at the Southern California Gas Company's Aliso Canyon storage facility near the Porter Ranch neighborhood of Los Angeles. An investigation into the cause of the largest-known release of methane in the U.S. faults a California utility for the way it maintained its natural gas storage field before the massive 2015 blowout. The report released Friday, May 17, 2019, by the California Public Utilities Commission says Southern California Gas Co. did not assess its wells for disaster potential and did not investigate previous ruptures. (AP Photo/Jae C. Hong, File)

FILE - This February 2017 file photo provided by the Oregon Department of Fish and Wildlife shows a wolf of the Wenaha Pack captured on a remote camera on U.S. Forest Service land in Oregon's northern Wallowa County. A federal proposal to take the gray wolf off the endangered species list has divided states in the West, and has even exposed conflicting views among top officials in Oregon. The governor said Thursday, May 16, 2019, it's critically important that range-wide recovery efforts for wolves across the West be maintained. (Oregon Department of Fish and Wildlife via AP, File)

Democratic Presidential candidate Washington Gov. Jay Inslee speaks during an event at the Blue Plains Advanced Wastewater Treatment Plant in Washington, Thursday, May 16, 2019, during an event where he unveiled part of his plan to defeat climate change. (AP Photo/Susan Walsh)