I think there are startups that are working to solve environmental issues. For example, Makani that later got acquired by Google, then Tesla, Solar Road, Gravit

I think there are startups that are working to solve environmental issues. For example, Makani that later got acquired by Google, then Tesla, Solar Road, Gravity Light and then there are few more also. There are lots of startups that work to solve such issues. Even AirBnb solves an environmental problem. For example, to an extent it reduce the chances of building new hotels and make use of already existing infrastructure for people to stay.