Actor Leonardo DiCaprio has thrown his weight behind the global push to break away from using fossil fuels in order to curb global warming, Reuters reports.

The Hollywood actor joined a group of 400 institutions and 2,000 people who have sworn to divest from using fossil fuels. Reuters reported that they have assets of $2.6 trillion.

“Climate change is severely impacting the health of our planet and all of its inhabitants,” said DiCaprio in a statement. He also announced that the Leonardo DiCaprio Foundation will also divest from using fossil fuels.

“We must transition to a clean energy economy that does not rely on fossil fuels, the main driver of this global problem,” he added.

DiCaprio’s statements come as Pope Francis speaks in the U.S. about environmentalism and climate change. Here’s what people think about his work on the subject in relation to economics, per a recent Fortune article.

In other DiCaprio news, he recently invested in a trash startup.