Hong Kong must have a hard look at its continued dependence on the mainland for its water supply and what it costs. Singaporean water policy researcher Shanisse Goh offers lessons for the city to be self-reliant when it comes to water.
The world's wild fisheries have already been fished to the sustainable limit. Could sustainable, productive aquaculture make up for this and feed the world? Researchers from the University of California, Santa Barbara, say yes.