Podcast: Rescue Radar from Dolphin Clicks

When physicist Tim Leighton saw documentary footage of dolphins using bubble nets to catch their prey, he knew something was fishy. How were the dolphins differentiating the bubbles and the fish? Even the most sophistocated man-made sonar doesn't have that ability. At least, not until Leighton and his colleagues at Southampton University designed Twin Inverted Pulsed Sonar or TWIPS, which can see through bubbles and focus on a true target, like a fish. Leighton's development of the technique was...