Environment

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FILE - In this Thursday, April 27, 2017, file photo, people walk past an Amazon Go store, currently open only to Amazon employees, in Seattle. Amazon Go shops are convenience stores that don't use cashiers or checkout lines, but use a tracking system that of sensors, algorithms, and cameras to determine what a customer has bought. Amazon says the company has no plans to use such sensors to automate the cashier jobs at Whole Foods, which Amazon is acquiring. Still, it’s the kind of technology that could help cut costs down the road, and that others may look to as well. (AP Photo/Elaine Thompson, File)

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In this image made available by the Spanish Airforce on Sunday June 18, 2017, a Spanish firefighting plane flies over the fires in Pedrogao Grande, Portugal. More than 2,000 firefighters in Portugal battled Monday to contain major wildfires in the central region of the country, where one blaze killed 62 people, while authorities came under mounting criticism for not doing more to prevent the tragedy. (Spanish Airforce via AP)

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British citizen Daniel Starling walks among the debris of his burnt house in the village of Figueira, near Pedrogao Grande, central Portugal, Monday, June 19 2017. Raging forest fires in central Portugal killed tens of people, many of them trapped in their cars as flames swept over roads Saturday evening. (AP Photo/Armando Franca),

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Burnt houses stand on a hill in the village of Figueira, near Pedrogao Grande, central Portugal, Monday, June 19 2017. More than 2,000 firefighters in Portugal battled Monday to contain major wildfires in the central region of the country, where one blaze killed 62 people, while authorities came under mounting criticism for not doing more to prevent the tragedy. (AP Photo/Armando Franca)

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A burnt car lies where it went off the road in the village of Nodeirinho, near Pedrogao Grande, central Portugal, Monday, June 19 2017. At least 11 people were killed in the village Saturday when it was swept by a forest fire. Raging forest fires in central Portugal killed at least 62 people, many of them trapped in their cars as flames swept over roads Saturday evening. (AP Photo/Armando Franca)

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A burnt truck next to a gate in the village of Pobrais, near Pedrogao Grande, central Portugal, Monday, June 19 2017. More than 2,000 firefighters in Portugal battled Monday to contain major wildfires in the central region of the country, where one blaze killed 62 people, while authorities came under mounting criticism for not doing more to prevent the tragedy. (AP Photo/Armando Franca)

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Rabbi David Rosen speaks during the Interfaith Rainforest Initiative in Oslo, Norway, Monday June 19, 2017. Religious and indigenous leaders worldwide are calling for an end to deforestation in an international multi-faith, multi-cultural plea to reduce the emissions that fuel climate change, which is killing tropical rainforests.(Lise Aserud/NTB Scanpix via AP)

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Norway's Minister of Climate and Environment Vidar Helgesen speaks during the Interfaith Rainforest Initiative in Oslo, Norway, Monday June 19, 2017. Religious and indigenous leaders worldwide are calling for an end to deforestation in an international multi-faith, multi-cultural plea to reduce the emissions that fuel climate change, which is killing tropical rainforests.(Lise Aserud/NTB Scanpix via AP)

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This screenshot provided by vessel-tracking service MarineTraffic shows a track of the route of the container ship ACX Crystal that collided with the USS Fitzgerald in the waters off Shimoda in the Izu Peninsula, southwest of Tokyo, Saturday, June 16, 2017, killing seven U.S. sailors. The track of the container ship’s route by MarineTraffic shows it made a sudden turn as if trying to avoid something at about 1:30 a.m., before continuing eastward. It then made a U-turn and returned around 2:20 a.m. to the area near the collision. (MarineTraffic via AP)

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This screenshot provided by vessel-tracking service MarineTraffic shows a track of the route of the container ship ACX Crystal that collided with the USS Fitzgerald in the waters off Shimoda in the Izu Peninsula, southwest of Tokyo, Saturday, June 16, 2017, killing seven U.S. sailors. The track of the container ship’s route by MarineTraffic shows it made a sudden turn as if trying to avoid something at about 1:30 a.m., before continuing eastward. It then made a U-turn and returned around 2:20 a.m. to the area near the collision. (MarineTraffic via AP)

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A screen shows a news program reporting about a collision between a U.S. destroyer and a container ship off Japan, in Tokyo, Monday, June 19, 2017. The USS Fitzgerald collided Saturday, June 17, with a Philippine-flagged container ship four times its size off the Japanese coast. (AP Photo/Koji Sasahara)

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In this Sunday, June 18, 2017 file photo, Vice Adm. Joseph Aucoin, commander of the U.S. Navy's 7th Fleet, speaks during a press conference on the status of the damaged USS Fitzgerald and search and rescue efforts for seven missing Fitzgerald sailors at the U.S. Naval base in Yokosuka, southwest of Tokyo. The U.S. destroyer collided with a container ship in the busy sea off Japan Saturday. (AP Photo/Eugene Hoshiko, File)

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In this Saturday, June 17, 2017 file photo, the damaged USS Fitzgerald is seen near the U.S. Naval base in Yokosuka, southwest of Tokyo. Seven U.S. sailors were killed when the Navy destroyer collided with the container ship in waters off Japan on June 17. The nighttime collision damaged the USS Fitzgerald severely. (AP Photo/Eugene Hoshiko, File)

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In this Saturday, June 17, 2017 file photo released by Japan's 3rd Regional Coast Guard Headquarters, the damaged Philippine-registered container ship ACX Crystal is seen in the waters off Izu Peninsula, southwest of Tokyo. Seven U.S. sailors were killed when a Navy destroyer collided with the container ship in waters off Japan on June 17. The nighttime collision damaged the USS Fitzgerald severely.(Japan's 3rd Regional Coast Guard Headquarters via AP, File)

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In this Saturday, June 17, 2017 file photo, the damaged USS Fitzgerald is towed by a tugboat in the waters near the U.S. Naval base in Yokosuka, southwest of Tokyo, after the U.S. destroyer collided with the Philippine-registered container ship ACX Crystal in the waters off the Izu Peninsula. (AP Photo/Eugene Hoshiko, File)

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In this Saturday, June 17, 2017 file photo, the damaged USS Fitzgerald is seen near the U.S. Naval base in Yokosuka, southwest of Tokyo, after the U.S. destroyer collided with the Philippine-registered container ship ACX Crystal in the waters off the Izu Peninsula. The USS Fitzgerald was back at its home port in Japan after colliding before dawn Saturday with the container ship four times its size. (AP Photo/Eugene Hoshiko)

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A screen shows a news program reporting about a collision between a U.S. destroyer and a container ship off Japan, in Tokyo, Monday, June 19, 2017. The USS Fitzgerald collided Saturday, June 17, with a Philippine-flagged container ship four times its size off the Japanese coast. (AP Photo/Koji Sasahara)

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Illustration on Trump's potential impact on America's space program in the 21st century by Alexander Hunter/The Washington Times

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This June 9, 2017 photo, Russ Finch shows off his tango mandarins, a hybrid that contains no seeds in Alliance, Neb. Finch has created greenhouses that run on geothermal heat. Geothermal heat produces heat from the ground through a singular heat source that dispenses heat through a tubing system. He began selling his geothermal greenhouses with his business Greenhouse in the Snow about three years ago. (Torri Brumbaugh/The Star-Herald via AP)

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FILE - This Friday Sept. 22, 2006, file photo, shows an oil refinery at sunset in Rodeo, Calif. California's cap-and-trade law, which puts a cap and a price on carbon emissions, expires in 2020, but Gov. Jerry Brown say he's still hopeful it will be extended, after he failed to convince lawmakers to extend it in tandem with the just-passed state budget. (AP Photo/Rich Pedroncelli, File)