In chemistry class, we quickly learn that acid is a dangerous
substance. So, when we learn that our oceans are becoming more
acidic, it follows that we assume that's not a good thing.
That's a good assumption to make. We hear a lot about carbon
dioxide polluting our planet these days. But what we don't hear
too much is how our oceans are buffering us from the true
impact, by absorbing at least half of our emissions. Not without
cost, however. The chemistry of our oceans is changing, and the
consequences are somewhat alarming. NBC's Green Week segment,
Sea Change, talks to the scientists at the forefront of this
important research.