Environmentalists report the world lost half its coral reefs in the last 30 years — and the pace is increasing.

It’s one thing for someone to say that. It’s another to see it. In the film "Chasing Coral,” filmmaker Jeff Orlowski follows a team of researchers who use time-lapse cameras to examine the effects of climate change and pollution. We get as close as we can get without putting on a wet suit.

— Thom Powers and Raphaela Neihausen

For more information, click here to visit the film web site.