NEW YORK (AP) — Amazon founder Jeff Bezos said Monday that he plans to spend $10 billion of his own fortune to help fight climate change.

Bezos, the world’s richest person, said in an Instagram post that he’ll start giving grants this summer to scientists, activists and nonprofits working to protect Earth.

“I want to work alongside others both to amplify known ways and to explore new ways of fighting the devastating impact of climate change,” Bezos said in the post.

Amazon, the company Bezos runs, has an enormous carbon footprint. Last year, Amazon officials said the company would work to have 100% of its energy use come from solar panels and other renewable energy by 2030.