Environment

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A UPS employee fatally shot three people before killing himself at a San Francisco facility Wednesday. (NBC Bay Area)

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In this May 13, 2017 photo, a tree stretches into the sky on the drive up Flagstaff Mountain in Boulder, Colo. Part of what makes Boulder's 45,000 acres of open space and parkland so spectacular is that it's so accessible. One minute, you're dining, shopping or walking on a city street; five minutes later, you're up in the mountains, surrounded by pine trees, looking down on the city below. (AP Photo/Beth J. Harpaz)

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This May 13, 2017 photo shows the Sunrise Amphitheater on Flagstaff Mountain in Boulder, Colo. The circular stage with seating was built by the Civilian Conservation Corps in the 1930s and is a popular site for weddings. It offers expansive views of the city below. (AP Photo/Beth J. Harpaz)

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Genesee District Judge David Guinn authorizes charges Wednesday, June 14, 2017, in Flint, Mich., for Department of Health and Human Services Director Nick Lyon and Chief Medical Executive Dr. Eden Wells in relation to the Flint water crisis. Lyon is accused of failing to alert the public about an outbreak of Legionnaires' disease in the Flint area, which has been linked by some experts to poor water quality in 2014-15. Wells was charged with obstruction of justice and lying to a police officer. (Jake May/The Flint Journal-MLive.com via AP)

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Forest rangers display pangolins confiscated from smugglers during a press conference in Medan, North Sumatra, Indonesia, Wednesday, June 14, 2017. The Indonesian navy confiscated dozens of live and dead pangolins in a raid on a suspected smugglers' warehouse Tuesday as the anteaters were allegedly being prepared for shipment to Malaysia. (AP Photo/Binsar Bakkara)

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A forest ranger holds a live pangolin confiscated from smugglers during a press conference in Medan, North Sumatra, Indonesia, Wednesday, June 14, 2017. The Indonesian navy confiscated dozens of live and dead pangolins in a raid on a suspected smugglers' warehouse Tuesday as the anteaters were allegedly being prepared for shipment to Malaysia. (AP Photo/Binsar Bakkara)

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Pangolins confiscated from smugglers are put inside a container during a press conference in Medan, North Sumatra, Indonesia, Wednesday, June 14, 2017. The Indonesian navy confiscated dozens of live and dead pangolins in a raid on a suspected smugglers' warehouse Tuesday as the anteaters were allegedly being prepared for shipment to Malaysia. (AP Photo/Binsar Bakkara)

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A forest ranger holds a pangolin confiscated from smugglers during a press conference in Medan, North Sumatra, Indonesia, Wednesday, June 14, 2017. The Indonesian navy confiscated dozens of live and dead pangolins in a raid on a suspected smugglers' warehouse Tuesday as the anteaters were allegedly being prepared for shipment to Malaysia. (AP Photo/Binsar Bakkara)

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Smoke billows from a high-rise apartment building in west London Wednesday, June 14, 2017. A massive fire raced through the building early Wednesday, emergency officials said. (Rick Findler/PA via AP)

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Emergency service responders and local people gather at a cordon near the site of a massive fire in west London Wednesday, June 14, 2017. A fire raced through a high-rise apartment building early Wednesday, emergency officials said. (Rick Findler/PA via AP)

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FILE - This May 8, 2017 file photo, shows an aerial view of Arch Canyon within Bears Ears National Monument revealing the vast landscape of the 1.35 million acres in southeastern Utah protected by President Barack Obama on Dec. 28, 2016. Interior Secretary Ryan Zinke's recommendation to downsize the new Bears Ears National Monument in Utah was applauded by the state's top Republican leaders but marked a stinging setback for a coalition of Western tribes that pushed for protection of lands they consider sacred. (Francisco Kjolseth /The Salt Lake Tribune via AP, File)

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A suspected North Korean drone crashed near the border between North and South Korea in Inje. South Korean officials found the unmanned aircraft and it found that it had taken photos of a U.S. missile defense shield. Investigators found hundreds of photos. (Associated Press)

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Local Republicans in Florida will celebrate President Trump's birthday with a public celebration and an appearance by the "TrumpMobile." (Image courtesy of Lake County Republicans)

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Oregon Gov. Kate Brown, at podium, discusses climate change at a news conference held by Calif., Gov. Jerry Brown, third from left, Tuesday, June 13, 2017, in Sacramento, Calif. During the event Fiji Prime Minister Frank Bainimarama, left, signed a subnational climate change agreement that calls for the signatories to reduce greenhouse gas emissions from 80 percent to 95 percent, below 1990 levels. Also seen are California Senate President Pro tem Kevin de Leon, D-Los Angeles, along with several other California lawmakers are other dignitaries. (AP Photo/Rich Pedroncelli)

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Washington Gov. Jay Inslee, left, talks with California Senate President Pro Tem Kevin de Leon, D-Los Angeles, after a climate change news conference, held by Calif. Gov. Jerry Brown, Tuesday, June 13, 2017, in Sacramento, Calif. (AP Photo/Rich Pedroncelli)

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California Gov. Jerry Brown discusses climate change at a news conference Tuesday, June 13, 2017, in Sacramento, Calif. During the event Fiji Prime Minister Frank Bainimarama, the incoming president of the United Nations Climate Change Conference, named Brown to be a special advisor for states and regions in advance of the November gathering in Germany. (AP Photo/Rich Pedroncelli)

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Oregon Gov. Kate Brown, center, discusses climate change at a news conference held by Calif., Gov. Jerry Brown, left, Tuesday, June 13, 2017,in Sacramento, Calif. During the event Fiji Prime Minister Frank Bainimarama, signed a subnational climate change agreement that calls for the signatories to reduce greenhouse gas emissions from 80 percent to 95 percent, below 1990 levels. (AP Photo/Rich Pedroncelli)

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Washington State Gov. Jay Inslee, center, discusses climate change at a news conference held by Calif., Gov. Jerry Brown, left, Tuesday, June 13, 2017, in Sacramento, Calif. During the event Fiji Prime Minister Frank Bainimarama, signed a subnational climate change agreement, launched by Brown in 2015, that calls for the signatories to reduce greenhouse gas emissions from 80 percent to 95 percent, below 1990 levels. (AP Photo/Rich Pedroncelli)

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The Prime Minister of Fiji Frank Bainimarama, left, discusses climate change as Calif. Gov. Jerry Brown, right, looks on Tuesday, June 13, 2017, in Sacramento, Calif. Bainimarama signed a non-binding international agreement that commits the signatories to reduce greenhouse gas emissions from 80 percent to 95 percent, below 1990 levels. (AP Photo/Rich Pedroncelli)