Microsoft has been rated the most environmentally friendly company. Here's what it's doing right.

Artificial intelligence can already help make medical diagnoses and weed out terrorists. Now Microsoft wants AI to make our planet greener. Ranked the No. 1 environmentally friendly company by the nonprofit Just Capital, the tech giant is finding innovative ways to combat climate change. Chief among them: a grant launched in 2017 that funds the use of AI to address global warming. The tech company also released code that can aid developers building such algorithms.