Obama trekked through the Alaskan wilderness with a famous adventurer - here's a sneak peek
He hiked glaciers to draw attention to climate change in action, and returned Mount McKinley to its original name, Denali.
But you can see the most entertaining part of his visit on TV on Thursday night.
While he was there, Obama trekked through the wilderness with adventurer and TV star Bear Grylls - eating leftover bear-eaten salmon, drinking wild tea, and signing a figurine of himself for Grylls' wife.
Though their antics are lighthearted ("Bear's a mediocre cook," Obama jokes at one point), the point of the trip was more serious.
"One of the main purposes of our trip here is to highlight the effects of climate change," Obama says on the show.
"I think speeches are one thing, but we live and breathe this stuff every day because we're out in it," Grylls replies. "And we see the harsh kind of reality of it. And a lot of it actually is quite shocking."
The two hiked around Exit Glacier, a massive sheet of ice in southern Alaska that has retreated over 1.2 miles since the 1800s. In 2014 alone, it retreated 187 feet, according to Reuters.
The White House Instagram account posted a picture of Obama standing by this sign marking where Exit Glacier was in 1961. "The impacts of climate change are real, and the people of Alaska are living with them every day," he wrote in the caption. "It's never been more important for us to work together to address this challenge."
Watch the full sneak peek here:
Check out this bonus clip of Obama eating a half-eaten piece of wild salmon that a bear left by a stream (Reuters reports he "shrugg[ed] off the food taster"):
And here's a look at one of those more lighthearted moments, when Grylls asks Obama to sign a figurine of himself: