Vertical ocean farms that can feed us and help our seas

ideas.ted.com—Bren Smith wants to create thousands of decent jobs, transform how we harvest food from the oceans, and blunt the effects of climate change and marine degradation — all at the same time. His big idea: small-scale marine farms.

Photo: Bren Smith harvesting sugar kelp on his Connecticut marine farm. Source: GreenWaveOrg/Instagram.