WASHINGTON — Acting National Oceanic and Atmospheric Administration chief Adm. Timothy Gallaudet said in a press conference at a scientific meeting this week, "I personally have not briefed the president on climate change."

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Gallaudet says he doesn't know if others had briefed the president. He does note that he was in the room when Trump signed a bill aimed at keeping plastic trash out of the ocean.

Trump has dismissed his administration's warnings about the impact of climate change, including a recent government forecast that it could lead to economic losses of hundreds of billions of dollars a year by the end of the century.