Saving Whales with High-Tech Buoys

Every year whales are killed when they collide with ships traveling in the same ocean highways. While it is hard to get exact numbers, it is believed that these collisions are threats to already endangered whale species. Now scientists have developed an alert system that they hope will help ships avoid nearby whales and reduce the frequency of these collisions. Listen to learn about a new high-tech buoy and how it works to protect whale populations.