A study finds that tiny Antarctic krill, which are food for a large part of sea life, may die out in a few decades due to acidification of the ocean from the CO2 we are pumping out.

Many species of whales eat krill. We don't have to worry about whaling if the whales will starve.

The Great Barrier Reef's health was estimated as "poor" in 2011 due to heavy rain in the neighboring land.

The coral has declined by 50% since 1985.