I recently had the opportunity to teach a Nitrox class to 5 very smart people.  Before I had the chance to talk about Project Aware, one of the students noticed the Ugly Truth about Trash poster and it took off from there.  They were very excited about learning different ways to play an active role.  One of the students (an engineer) talked about engineering a ship to skim off and process plastics in our oceans.  A lengthy discusion but well worth it.  They left the classroom very aware!