Eliza Collins

USA TODAY

Al Gore and Donald Trump met Monday just weeks after the former vice president campaigned for the president-elect's opponent, Democrat Hillary Clinton.

"I had a lengthy and very productive session with the president-elect. It was a sincere search for areas of common ground," Gore told reporters after the meeting at Trump Tower.

Gore added that prior to the meeting with Trump he'd met with Ivanka Trump, but that "the bulk of the time was with the president-elect, Donald Trump."

"I found it an extremely interesting conversation, and to be continued, and I'm just going to leave it at that," Gore said.

Gore had been scheduled to meet only with Trump's daughter about his signature issue, climate change. Earlier in the morning, Trump spokesman Jason Miller said the president-elect had no plans to meet with the 2000 Democratic presidential nominee.

The meeting came the same day The Guardian published an interview with Gore where he said that the threat of climate change is too pressing for people to “despair” over Trump’s election.

“My message would be that despair is just another form of denial. There is no time to despair. We don’t have time to lick our wounds, to hope for a different election outcome,” Gore wrote. “We have to win this struggle and we will win it; the only question is how fast we win. But more damaged is baked into the climate system every day, so it’s a race against time.”

Gore was a recipient of the 2007 Nobel Peace Prize for his efforts in raising awareness of the dangers of climate change.

Trump has previously said that climate change is a hoax invented by the Chinese and vowed to cancel the Paris climate deal. After being elected president, though, he signaled at least some openness to modifying his views.

In a meeting with The New York Times last month, Trump said there is “some connectivity” related to humans and climate change.

Asked if he’d pull out of the Paris Climate deal, the president-elect said, “I’m going to take a look at it."

Politico recently reported that Ivanka Trump planned to focus on climate change during her father's presidency.