Environment

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The June 27, 2017 photo shows the entrance at the 'Sirgenstein' cave in Blaubeuren, Germany. Art dating to the Ice Age was found in the caves. Art dating to the Ice Age was found in the caves. wo sites with cultural treasures separated by more than 40,000 years - caves with art dating to the Ice Age, and buildings designed by a Bauhaus master less than 100 years ago - highlight submissions from Germany being considered as World Heritage Sites by the UN’s cultural agency, UNESCO. (AP Photo/Matthias Schrader)

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The June 27, 2017 photo shows a general view of the 'Hohle Fels' caves in Blaubeuren, Germany. Art dating to the Ice Age was found in the caves. Art dating to the Ice Age was found in the caves. wo sites with cultural treasures separated by more than 40,000 years - caves with art dating to the Ice Age, and buildings designed by a Bauhaus master less than 100 years ago - highlight submissions from Germany being considered as World Heritage Sites by the UN’s cultural agency, UNESCO. (AP Photo/Matthias Schrader)

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FILE - In this Sept. 2, 2010, file photo, Chief hurricane forecaster James Franklin prepares for a live update on Hurricane Earl at the National Hurricane Center in Miami. Franklin, a retiring chief of the hurricane specialist unit at the National Hurricane Center in Miami says further cuts to tropical weather research threaten to undermine recent improvements in hurricane intensity forecasts. (AP Photo/Lynne Sladky, File)

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(Greater Williamsburg Chamber and Tourism Alliance)

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(Amazon)

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In this photo taken Feb. 21, 2017, a group of elk move past another that had died on the National Elk Refuge in northwest Wyoming. This past winter was hard on wildlife in seven western states including Wyoming because of heavy snow and bouts of bitter cold that hit areas where wildlife spend the winter months. Some states have reduced hunting licenses as a result. (Ryan Dorgan/Jackson Hole News & Guide via AP)

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In this Jan. 18, 2017, file photo provided by the Oregon Department of Fish and Wildlife, elk feed at the Wenaha Wildlife Area near Troy, Ore. Wildlife managers in seven states in the U.S. West, including Oregon, report severe weather this past winter was rough on wildlife. (Keith Kohl/ Oregon Department of Fish and Wildlife via AP, File)

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File - In this Jan. 18, 2017, file photo provided by the Oregon Department of Fish and Wildlife, elk feed at the Wenaha Wildlife Area near Troy, Ore. Wildlife managers in seven states, including Oregon, in the U.S. West report severe weather this past winter was rough on wildlife. (Keith Kohl/ Oregon Department of Fish and Wildlife via AP, File)

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Bunches of mountain tea are on sale in a shop in Athens, on Saturday, July 1, 2017. Greek authorities and conservationists say bands of impoverished Albanians make regular forays over the border, illegally harvesting donkey loads of wild herbs and medicinal plants such as mountain tea, also called ironwort, hawthorn and primrose, but also eradicating rare or endangered species. (AP Photo/Yorgos Karahalis

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Bunches of mountain tea are on sale in a shop in Athens, on Saturday, July 1, 2017. Greek authorities and conservationists say bands of impoverished Albanians make regular forays over the border, illegally harvesting donkey loads of wild herbs and medicinal plants such as mountain tea, also called ironwort, hawthorn and primrose, but also eradicating rare or endangered species. (AP Photo/Yorgos Karahalis)

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In this photo provided by the Atlantic Marine Conservation Society, a deceased whale lies on the shore in Southhampton, N.Y., Saturday, July 1, 2017. The female fin whale has evidence of shark bites, but there were no other signs of injury have been found. A team of biologists plans to conduct a necropsy on Saturday. (Atlantic Marine Conservation Society via AP)

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FILE - In this Oct. 10, 2016 file photo, floodwaters inundate a roadway near Mullins, S.C. Starting Saturday, July 1, 2017, South Carolina's first gas tax increase in 30 years will help rebuild deteriorated roadways and bridges statewide, but transportation officials caution a smoother ride may still be years away. (AP Photo/Rainier Ehrhardt, File)

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ADVANCE FOR WEEKEND EDITIONS, JULY 1-2 - In this June 16, 2017 photo, Sondra Larson, center, and other volunteers look at an aquatic plant during AIS Detector training in Brainerd, Minn. learning how to identify invasive species and avoid being fooled by look-alikes. They are the latest graduates from the AIS Detectors program, a joint project between the University of Minnesota Extension Service and the U's Aquatic Invasive Species Research Center. (Kirsti Marohn/Minnesota Public Radio via AP)

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ADVANCE FOR WEEKEND EDITIONS, JULY 1-2 - In this June 16, 2017 photo, volunteers use magnifying glasses to get a closer look and compare samples to photos of invasive species in a waterproof handbook in Brainerd, Minn. They are the latest graduates from the AIS Detectors program, a joint project between the University of Minnesota Extension Service and the U's Aquatic Invasive Species Research Center. (Kirsti Marohn/Minnesota Public Radio via AP)

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FILE - In this Aug. 29, 2016 file photo, a salmon flails in a water tub after being caught off the coast of Stinson Beach, Calif. Gov. Jerry Brown's plan to route much of California's mightiest river into two massive tunnels poses new perils for salmon and other struggling native species, but could give them a couple breaks as well, experts and project supporters and opponents say in the wake of two newly issued wildlife rulings on the $16 billion project. (AP Photo/Eric Risberg, File)

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File - In this Aug. 29, 2016 file photo, Jared Davis hauls in a salmon caught off the coast of Stinson Beach, Calif. Gov. Jerry Brown's plan to route much of California's mightiest river into two massive tunnels poses new perils for salmon and other struggling native species, but could give them a couple breaks as well, experts and project supporters and opponents say in the wake of two newly issued wildlife rulings on the $16 billion project. (AP Photo/Eric Risberg, File)

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In this Tuesday, June 20, 2017 photo, Randy Reagan, and his wife Kate, of New Stanton, Pa., pose for a portrait under their Adopt A Highway sign, at the corner of Center Ave. and Paintersville Rd in New Stanton. They have been cleaning up trash on the side of Old Route 119 (Center Ave), since they adopted the stretch of highway from Bruster's Ice Cream to the old Sony plant, approximately 10 years ago. (Dan Speicher/Pittsburgh Tribune-Review via AP)