Will Robinson
September 27, 2016 AT 12:00 PM EDT

Leonardo DiCaprio is making his plea to stop climate change with Before the Flood.

The trailer for DiCaprio and director Fisher Stevens’ (The Cove) documentary was released Tuesday, showing DiCaprio in five continents and the Arctic observing humans’ effect on the environment and learning about efforts taken all over the world to curb damage that’s already been done.

“We’ve known about this for decades, for over half a century. Try to have a conversation with anyone about climate change, people just tune out,” DiCaprio says in the opening voiceover. “And the problem seems to be getting worse and worse and worse.”

DiCaprio is seen meeting with President Barack Obama, Pope Francis, and entrepreneur Elon Musk in the doc, which will also feature Secretary-General of the United Nations Ban Ki-moon, Secretary of State John Kerry, and more. While the effects of climate change will be documented, Before the Flood appears to harbor some hope.

“If we keep pushing, there’s no reason why we can’t solve this problem,” Obama tells DiCaprio during a Washington D.C. stroll. The two will discuss climate change during the first-ever South By South Lawn (SXSL) on Monday.

When DiCaprio won his first Academy Award in February, he used part of his speech to warn about the concerns of climate change. “Climate change is real. It is happening right now,” he said. “It is the most urgent threat facing our entire species, and we need to work collectively together and stop procrastinating.”

See the trailer above. Before the Flood opens in theaters Oct. 21 and will air globally (in 171 countries and 45 languages) on the National Geographic Channel starting Oct. 30.

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