Environment

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Materials are brought in to restore power to Hatteras Island, Thursday, Aug. 3, 2017, in Rodanthe, N.C. Workers building the replacement Bonner Bridge over the Oregon Inlet accidentally severed two underground power lines on July 27. Utility officials say they expect to restore power to two North Carolina islands by the weekend. (Steve Earley/The Virginian-Pilot via AP)

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The beach in Avon, N.C., on Hatteras Island is nearly empty, Thursday, Aug. 3, 2017. Workers building the replacement Bonner Bridge over the Oregon Inlet accidentally severed two underground power lines on July 27, that led to the mandatory evacuation of vacationers at the height of the tourist season. Utility officials say they expect to restore power to two North Carolina islands by the weekend. (Steve Earley/The Virginian-Pilot via AP)

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In this May 20, 2017, photo, the Bus Rapid Transit road, left back, built for last year’s Rio de Janeiro’s Olympics, resulted in the displacement of some residents of the Vila Uniao de Curicica area, in Rio de Janeiro, Brazil. The forced relocation experience isn’t unique to Rio. London faced the same issue, as did Beijing before it. But Rio’s poverty and vast inequality helped draw attention to the actions of the city and Olympic organizers. (AP Photo/Liliana Michelena)

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In this May 26, 2017, photo is an entrance into the Indiana slum, where several houses were demolished in the lead-up to the Olympics, in Rio de Janeiro, Brazil. Despite being more than three miles away from the closest Olympic venue, the northern community of Indiana was also targeted for eviction. More than 70,000 people were displaced to make way for last year’s Rio de Janeiro’s Olympics. (AP Photo/Liliana Michelena)

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Kayakers paddle in view of downtown Seattle, cloaked in a haze of smoke from fires raging in British Columbia that swept down into the Puget Sound region, Thursday, Aug. 3, 2017, in Seattle. An excessive heat warning for the area continues through Friday evening, as unusually hot weather will bring temperatures in the 90's. (AP Photo/Elaine Thompson)

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Cyclists peddle in view of downtown Seattle, cloaked in a haze of smoke from fires raging in British Columbia that swept down into the Puget Sound region, Thursday, Aug. 3, 2017, in Seattle. An excessive heat warning for the area continues through Friday evening, as unusually hot weather will bring temperatures in the 90's. (AP Photo/Elaine Thompson)

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ADVANCE FOR USE SATURDAY. AUG 5 - In this July 20, 2017 photo, a tiger named Andy wades in a pond in Tampa, Fla. Big Cat Rescue is a nonprofit sanctuary committed to humane treatment of rescued animals, often coming from exploitive for-profit operations. (Loren Elliott/Tampa Bay Times via AP)

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ADVANCE FOR USE SATURDAY. AUG 5 - In this July 20, 2017 photo, volunteer Mary Lou Geis tends to a tiger named Seth at Big Cat Rescue in Tampa, Fla. Big Cat Rescue is a nonprofit sanctuary committed to humane treatment of rescued animals, often coming from exploitive for-profit operations. (Loren Elliott/Tampa Bay Times via AP)

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ADVANCE FOR USE SATURDAY. AUG 5 - In this July 20, 2017 photo, A tiger named Seth cools down in a shady spot at Big Cat Rescue in Tampa, Fla. Big Cat Rescue is a nonprofit sanctuary committed to humane treatment of rescued animals, often coming from exploitive for-profit operations. (Loren Elliott/Tampa Bay Times via AP)

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ADVANCE FOR USE SATURDAY. AUG 5 - In this July 20, 2017 photo, a tiger named Andy climbs out of the water in Tampa, Fla. Big Cat Rescue is a nonprofit sanctuary committed to humane treatment of rescued animals, often coming from exploitive for-profit operations. (Loren Elliott/Tampa Bay Times via AP)

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ADVANCE FOR USE SATURDAY. AUG 5 - In this July 20, 2017 photo, a tiger named Seth rests above a pond at Big Cat Rescue in Tampa, Fla. Big Cat Rescue is a nonprofit sanctuary committed to humane treatment of rescued animals, often coming from exploitive for-profit operations. (Loren Elliott/Tampa Bay Times via AP)

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The Smithsonian's National Museum of Natural History is shown in this undated file photo. (Photographs courtesy of the National Museum of Natural History) **FILE**

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This photo shows overhead power lines on Hatteras Island, N.C., Thursday, Aug. 3, 2017, where residents are hoping that full power will be restored soon. The outage caused by a construction accident forced an estimated 50,000 visitors to leave Hatteras and Ocracoke islands, and others never made it to the popular vacation spots because of evacuation orders that are still in place. (Steve Earley/The Virginian-Pilot via AP)

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Highway 12 on Hatteras Island, N.C., is quiet on the morning of Thursday, Aug. 3, 2017, as tourists have been evacuated from Hatteras and neighboring Ocracoke Island in North Carolina. The outage caused by a construction accident forced an estimated 50,000 visitors to leave Hatteras and Ocracoke islands, and others never made it to the popular vacation spots because of evacuation orders that are still in place. (Steve Earley/The Virginian-Pilot via AP)

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This Aug. 8, 2016 photo provided by the J.R. Simplot Company shows Simplot Plant Sciences’ Innate Generation 2 genetically engineered potatoes at the Michigan State University field that have that survived after being infected with late blight disease, that led to the Irish potato famine, in East Lansing, Mich. Canadian officials said three types of potatoes genetically engineered by an Idaho company to resist the pathogen that caused the famine are safe for the environment and safe to eat. The approval confirmed by Health Canada officials on Thursday, Aug. 3, 2017, means the J.R. Simplot Co. potatoes can be imported, planted and sold in Canada. (Nicolas Champouret/J.R. Simplot Company via AP)

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A roadblock is set up at the north end of the Bonner Bridge on Thursday, Aug. 3, 2017, on Hatteras Island, N.C. The outage caused by a construction accident forced an estimated 50,000 visitors to leave Hatteras and Ocracoke islands, and others never made it to the popular vacation spots because of evacuation orders that are still in place. (Steve Earley/The Virginian-Pilot via AP)

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In this Tuesday, Aug. 1, 2017 a layer of smog hangs over the Salt Lake City area. Ozone levels in northern Utah's murky summer air have reached their worst levels in nearly 10 years this summer amid hot temperatures and high-pressure systems, the Salt Lake Tribune reported. (Francisco Kjolseth/The Salt Lake Tribune via AP)

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New York State Environmental Conservation officers guide a carved ivory tusk up a conveyor belt into a crusher, Thursday, Aug. 3, 2017, in New York's Central Park. The New York State Department of Environmental Conservation destroyed illegal ivory confiscated through state enforcement efforts. (AP Photo/Mary Altaffer)

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Musician Mick Fleetwood watches an ivory crushing ceremony, Thursday, Aug. 3, 2017, in New York's Central Park. The New York State Department of Environmental Conservation destroyed illegal ivory confiscated through state enforcement efforts over the last two years. (AP Photo/Mary Altaffer)