Environment

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A billboard for CNN is shown Monday, Feb. 1, 2010, in New York. (AP Photo/Mark Lennihan) ** FILE **

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Illustration on the modern development of climate science in American universities by Alexander Hunter/The Washington Times

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Illustration on the New Hampshire Democratic primaries by Alexander Hunter/The Washington Times

In this July 11, 2018 file photo, a drone equipped with a thermal camera flies over the plants at the Pennsylvania Department of Natural Resources' Jennings Environmental Education Center on Wednesday, July 11, 2018 in Slippery Rock, Pa.(AP Photo/Keith Srakocic, File) **FILE**

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Thomas Jefferson laid out a vision of "a wall of separation between church and state" in a letter to Danbury Baptists. (Associated PRess)

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Visitors take pictures of the Berlin Wall exhibit at the Newseum for the last time.

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A group of 91 environmental, wildlife and progressive groups called for Bureau of Land Management acting Director William Perry Pendley's resignation in a letter to the Interior Secretary. (Associated Press)

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Scientist and author Matt Ridley is photographed during an interview on Friday, April 13, 2012, at St Pancreas Station in London. (Fiona Hanson/AP Images) **FILE**

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U.S. Air Force Combat Controllers and U.S. Army Pathfinders land in a field conducting Drop Zone surveys for future air drop sites in a U.S. Navy HH-60 on January 24, 2010 in Port au Prince, Haiti during Operation Unified Response. (U.S. Air Force photo by Master Sgt. Jeremy Lock) (Released)

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U.S. Air Force Combat Controllers and U.S. Army Pathfinders land in a field and are conducting Drop Zone surveys for future air drop sites on January 24, 2010 in Port au Prince, Haiti during Operation Unified Response. (U.S. Air Force photo by Master Sgt. Jeremy Lock) (Released)

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U.S. Air Force Combat Controllers and U.S. Army Pathfinders land in a field conducting Drop Zone surveys for future air drop sites in a U.S. Navy HH-60 on January 24, 2010 in Port au Prince, Haiti during Operation Unified Response. (U.S. Air Force photo by Master Sgt. Jeremy Lock) (Released)

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Democratic presidential candidate Sen. Bernie Sanders, I-Vt., listens as an audience member poses a question at a Newport Town Hall Breakfast Sunday, Dec. 29, 2019, at the Newport Opera House in Newport, N.H. (AP Photo/Cheryl Senter)

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Scientists are aggressively pursuing a vaccine to the mosquito-borne Zika virus and using special bacteria to neutralize the mosquitoes that carry the disease. (ASSOCIATED PRESS)

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I'm sorry, but we do not accept damaged goods ... (Illustration by Michael Ramirez for Creators Syndicate)

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This summer 2018 file photo provided by the National Oceanic and Atmospheric Administration shows the U.S. Coast Guard Icebreaker Healy on a research cruise in the Chukchi Sea of the Arctic Ocean. (Devin Powell/NOAA via AP, File)

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Marine Raiders navigate a Combat Rubber Raid Craft during a nighttime Visit, Board, Search and Seizure preparation near Mobile, Alabama. The VBSS was part of a 10-day exercise in the Gulf Coast region to maintain unit readiness. (U. S. Marine Corps photo by Gunnery Sgt. Joshua S. Higgins/Released)

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A Marine Special Operations Team member fires a M240B machine gun during night fire sustainment training in Helmand province, Afghanistan, March 28, 2013. Marine Special Operations Team members are deployed in Helmand province to train and mentor Afghan National Security Forces. (U.S. Marine Corps photo by Sgt. Pete Thibodeau)

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Marines with Marine Corps Special Operations Command conduct a Special Patrol Insertion/Extraction excercise on a CH-53E aboard Marine Corps Base Camp Lejeune, N.C., Sept. 13, 2013. This training has helped the MARSOC MPC program in developing what will become the standard operating procedures. (U.S. Marine Corps photo by Sgt. Anthony Carter/Released)

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A Marine with Individual Training Course, Marine Special Operations School, Marine Corps Forces, Special Operations Command, patrols through a forest during a fire and maneuver exercise Sept. 24, 2010 aboard Camp Lejeune, NC. The exercise was the culminating event of a weapons and tactics package the course conducted that week. (Official U.S. Marine Corps photo by Lance Cpl. Thomas W. Provost/Released)