Man-made climate change is a thing. Decades of work and the scientific

community are agreed on that. How then to convince the final

doubters? David Hastings, a marine scientist at Eckerd College, has a view

on that. On any given day he might be communing with sea creatures, or

communicating with politicians or concerned citizens. Listen in as he

explains that despite the thunderclouds, there may be some silver linings.