In the first of a series of stories tracking their progress in real time, three scientists explain the genesis of a global effort to present the health of the world's oceans with a single number.
Deep-sea researcher Craig McClain tells Curiouser & Curiouser about the bounty of life he's found in one of the least inviting places on earth -- the bottom of the ocean.
Economic models can illuminate the monetary value of beaches and mangroves, but if local people aren't engaged in conservation, market forces — and coastal ecosystems — may be dead in the water.
Aside from global climate change, carbon dioxide emissions are contributing to another equally disturbing global problem: Ocean acidification — and its potential effects on marine ecosystems, especially coral reefs — has biologists very concerned.