President Obama makes his way across the tarmac Monday to greet well-wishers upon arrival at Elmendorf Air Force Base in Anchorage, Alaska. Mandel Ngan/AFP/Getty Images hide caption

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Delegates took their seats during the plenary session at the Bonn climate change conference on March 10, 2014. Negotiations resume this week; by the end of the year, the U.N. hopes to have forged a new global agreement. UNclimatechange/Flickr hide caption

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President Obama is renaming Alaska's Mount McKinley in an effort to strengthen cooperation between the government and Alaska Native tribes. The peak is returning to its traditional name, Denali. Al Grillo/AP hide caption

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A firefighter monitors flames from the Rocky Fire as it approaches a home late last month. The wildfire has consumed thousands of acres in just over a week. Justin Sullivan/Getty Images hide caption

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Many homes in the mountains of Kittitas County, Wash., are at severe risk for a wildfire. Fire managers are worried that parts of typically "wet" Washington state are years behind other places in the West when it comes to fire mitigation and prevention. David Gilkey/NPR hide caption

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Floodwaters from rising sea levels have submerged and killed trees in Bedono village in Demak, Central Java, Indonesia. As oceans warm, they expand and erode the shore. Residents of Java's coastal villages have been hit hard by rising sea levels in recent years. Ulet Ifansasti/Getty Images hide caption

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A bumblebee collects pollen from a flower. New evidence suggests climate change has left bumblebees with a shrinking range of places to live. Yuri Kadobnovy/AFP/Getty Images hide caption

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Dennis van Berkel, an attorney with the Dutch environmental group Urgenda, stands on an earthen berm on the outskirts of Amsterdam. The water is higher than the land on the other side of the berm. A Dutch court ruled in favor of Urgenda on Wednesday, saying the Dutch government must cut carbon emissions by 25 percent. Environmental groups in other countries were closely watching the case. Ari Shapiro/NPR hide caption

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Bill Pentak of Panda Power Funds (left), Plant Manager John Martin (center) and Construction Manager Rob Risher (right) stand in front of the construction site for the new Panda Liberty gas power plant in Towanda, Penn. The plant, expected to come online in early 2016, was deliberately sited on top of the Marcellus Shale to take advantage of the cheap, abundant gas. Marie Cusick/WITF hide caption

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Cardinals follow a news conference to present Pope Francis' encyclical "Laudato Si," or "Praise Be," at the Vatican on Thursday. The far-reaching papal letter addressed climate change and the poor. Andrew Medichini/AP hide caption

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