Oysters' Future Imperiled as Oceans Acidify

Oysters, those slimy mollusks whose juices are thought to boost sexual desire, may be losing their comfy sea homes.

The reason? Global oceans are becoming more acidic as they absorb carbon dioxide pumped into the air from burning fossil fuels, which makes it difficult for calcifying organisms like oysters to create their shells.

The ocean is now 30 percent more acidic than it was before the Industrial Revolution.