The Natural World - Season 20 (2001) (Seizoen)
Documentaire
Groot Brittanië,
2002, 50 min
Samenvattingen(1)
Bats have the amazing ability to "see" tiny objects in darkness using laser-like sound beams. Mexican free-tailed bats use echolocation to snatch insects at 10,000 feet, or to find their own infant in a crèche of 20 million screeching babies. Bat technology benefits humans too: echolocation can help blind people see with sound. And as pest-control agents bats save farmers billions of pounds each year. (BBC)
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