Jeff Bezos, founder and CEO of Amazon and the world's richest man, has said he was committing $10 billion to a new fund to tackle climate change.

In an Instagram post, the e-commerce tycoon said the Bezos Earth Fund would "fund scientists, activists, NGOs - any effort that offers a real possibility to help preserve and protect the natural world."

Bezos, said his new foundation would begin issuing grants this summer.

Last September, Bezos said Amazon would pledge to become carbon neutral by 2040 and said the company would order one lakh electric delivery trucks.

