Lethal Seas - NOVA

Climate change is real and will likely be the biggest single issue for the next century - most of which I probably won't be around to see. So many of our other issues - food scarcity, weather-related natural disasters, political instability - will be influenced by the changing climate that it will become tough to tell whether an issue is caused by climate change or by something else, though, because climate change will simply be an accepted and obvious thing when our current (soapbox warning) crop of ignorant, private-industry-bought-and-paid politicians pass from the halls of Congress.

This program - from PBS's Nova - goes through the effects of increased carbon dioxide levels on the oceans and the life therein. Oyster larvae are dissolving in the more acidic ocean water. Coral reefs are dying in the acidified water. Terapods - a first level consumer and base food in the ocean pyramid - aren't growing. Fish are swimming toward predators after growing up in an acidified ocean.

There's a great animation of the calcium carbonate building at 9:40 and of the formation of carbonic acid at 10:05 after that. The rest of the video is great, too.