Transcript for Trump rejects government climate report finding

There was a bombshell report on climate change from 13 U.S. Agencies put out the day after Thanksgiving, when millions of Americans were still marking the holiday. But in that report, it warns about farming in the midwest and future floods and fires in the U.S. And tonight, our Jon Karl asking the president, does he believe it? Reporter: President trump today dismissed the report written by scientists from 13 federal agencies and released by his administration the day after Thanksgiving. It's a report that warns climate change is already taking a toll. Record wildfires in California, stronger hurricanes, crop failures in the midwest. The report bluntly warns of more to come, including threats to "Air quality and the transmission of disease" and says if steps aren't taken to limit the release of carbon into the atmosphere, the economic consequences will be devastating. A 10% loss to the economy, worse than the great recession. Today, we asked the president about it. Mr. President, have you read the climate report yet? I've seen it, I've read some of it and it's fine. Reporter: They say economic impact could be devastating. I don't believe it. Reporter: You don't believe it? No, no, I don't believe it. Right now, we're at the cleanest we've evand that's very important to me. But if we're clean, but every other place on Earth is dirty, that's not so good. Jonathan Karl live at the white house tonight. You know many are questioning the times of the release of this report, the day after Thanksgiving, was it meant to bury it? Reporter: It sure looked that way, releasing the report in the middle of Black Friday. If that was the intent, David, it looks like it backfired. Because it was released on such a slow news day, the report dominated news coverage throughout the holiday weekend. David? Jon Karl, thank you.

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