A blistering marine heat wave has sent water temperatures off the coast of South Florida skyrocketing to record highs, causing a massive coral bleaching event.
As a blistering marine heat wave persists, a full-blown emergency is unfolding along the only living coral barrier reef in the continental United States.
The global growth of fish farming is driving the demand for Antarctic krill as an alternative to wild fish in fish feeds, amid the depletion of many wild fish stocks.
Efforts to clean up the lingering effects of the oil spill are well underway, but secrecy and deregulation have returned to the Gulf, raising the specter of a repeat.