![PopTech Videos: PopCasts show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/431/small/poptech-videos-popcasts.jpg)
Summary: <p>Watch pioneering marine ecologist and Scripps Institution professor Enric Sala build a time machine to the 16th century – exposing a pristine coral reef few human eyes have ever glimpsed. He also explains how 99.9% of the world’s coral reef research has been flawed and posits tourism as a way to save these endangered, natural wonders.</p>