Robert Downey Jr. discussed his new book “Cool Food,” teaming up with author Thomas Kostigen to shed light on climate issues and saving the planet through food.

Thoughtful eating is a common theme in their book. “Cool food is really about lifestyle—transformational shifts from little actions, experiences, and different choices," said Downey Jr.

The 'Cool Food' initiative by the World Resources Institute guides businesses and customers toward choosing foods with a smaller climate footprint.