It's time to get technical! Technical doesn't have to be tricky, though—even in the lower grades. A short video discussing standard PS4C, Information Technologies and Instrumentation, leads you through the surprisingly simple...

Are there more fish in the ocean or stars in the galaxy? The video begins with explaining the old method for estimating the number of fish in the ocean. Then it details the new method using SONAR. The differences in estimates lead...

Daniel Kish has been blind since he was 13 months old, but has learned to "see" using a form of echolocation. He clicks his tongue and sends out flashes of sound that bounce off surfaces in the environment and return to him, helping him...

This video segment, adapted from NOVA follows a team of enthusiasts and scientists who attempt to find a trace of the Loch Ness monster by scouring the lake with sonar. [5:24]

This sample clip illustrates the implementation of dual-frequency sonar imaging to monitor patterns of manta ray movement into coral reef lagoons. Here a manta "train", or collection of synchronously moving individuals, travels back and...

For over 50 million years, bats and moths have been engaged in an evolutionary arms race: bats evolving new tricks to catch moths, and moths developing counter-measures to escape bats. William Conner, a biologist at Wake Forest...

Curious about Nessie? This site accompanies "The Beast of Loch Ness," a NOVA movie that tried to use science to track the Loch Ness Monster. This site briefly explores other mythological creatures, the Loch Ness Legend, provides...