Which moonshot cleantech projects (that might currently even appear to be moonshine!) have the potential to make a really big difference to sustainability in future?

The world might need really big and innovative cleantech ideas - the moonshots. What could be some of these projects that could have a real chance of making the world sustainable?

How will it have a positive impact?

Better Health of Planet

Dramatically Accelerating Sustainability

Who will it have a positive impact on?

Industries

Government

Highly Vulnerable Entities - Islands, Endangered Species

Developed Countries