NPR reports Amazon CEO Jeff Bezos announced Monday that he is pledging $10 billion to fight climate change. 

Bezos claims the funds will go towards establishing a Bezos Earth Fund. 

Bezos is committing the money because he believes climate change is "the biggest threat to our planet," according to NPR.

"This global initiative will fund scientists, activists, NGOs — any effort that offers a real possibility to help preserve and protect the natural world," Bezos said in an Instagram post. 

His announcement comes months after Amazon employees publicly pressured him and the company to do more to address the issue, according to CNN.

Thousands of Amazon employees signed a letter last May asking how the company planned to respond to climate change, and many of them staged a walkout in September calling on it to do more.

CNN reports "It's going to take collective action from big companies, small companies, nation states, global organizations, and individuals," Bezos said.