Climate warming due to increased carbon dioxide in the atmosphere is only part of the "CO2 problem" affecting life on the planet. In fact, much of the CO2 emitted from burning fossil fuels is absorbed by the ocean, causing ocean acidification, a chemical phenomenon threatening marine life. Join Scripps marine biologist Martin Tresguerres as he describes research into the potential impact of ocean acidification on corals, and the mechanisms these amazing marine animals use to try to cope with the problem. (#24249)