Bill Gates Wants You to Eat Fake 'Butter' Made from Air to Fight Climate Change

The synthetic 'butter' is made through a thermochemical process that builds fat molecules by creating chains of carbon dioxide, hydrogen and oxygen. It is unknown if lab-made fats and oils are safe to eat and if other toxic ingredients will be added to the product.

The billionaire Microsoft founder is backing a California start-up that makes an animal-free "butter" alternative from carbon dioxide to help fight climate change.

Gates -- who got the internet buzzing last year when he funded an insect-derived food tech firm -- says the company, Savor, has perfected the chemical process of churning out dairy-less butter.

"The idea of switching to lab-made fats and oils may seem strange at first. But their potential to significantly reduce our carbon footprint is immense. By harnessing proven technologies and processes, we get one step closer to achieving our climate goals," Gates wrote in a blog post.