Here's why Bill Gates, Jeff Bezos, Jack Ma and other investors are pouring billions into clean-tech

Investors are pouring billions into clean-tech ventures as renewable-energy technology advances. At the same time, more than 100 globally significant financial institutions have restricted investments in carbon-intensive fossil fuels, according to the International Energy Agency.The $1 billion Breakthrough Energy Ventures fund, founded by Gates, Bezos and other philanthropists, has invested in 14 companies involved in everything from battery storage to fusion energy.

Story by Clay Dillow | @cwdillow