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How a Venus Flytrap Snaps Shut
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Big Galaxy Swallows Little Galaxy
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What is a Noun
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The solar system's biggest junkyard
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Honeybees do the wave

When a buzzing hornet comes near, most people want to run away as quickly as possible. But if the hornet targets your home, you will need to find a way to shoo it away. Fortunately, hornets generally don’t target people’s homes. In southern Asia, however, a type of big hornet does frequently attack giant honeybees while they are clustered around their homes Scientists have discovered how this clever bee species uses “shimmering” to drive such predators away. Shimmering creates a rippling effect on the beehive, similar to the effect seen in a sports stadium when thousands of fans create a “wave.” The waves are created when hundreds of bees coordinate their movements and flip their abdomens upward. Though scientists had observed shimmering in field studies, it was unknown whether the rippling effect could keep predators away. Gerald Kastberger, a bee researcher at the University of Graz in Austria, set up cameras to catch two colonies of the giant honeybees in action. Unlike western honeybees, giant honeybees do not have outer walls on their nests. Instead, thousands of bees, in layers up to seven bees deep, surround a honeycomb. Because the nests lack any outer protection, the bees are vulnerable to predators such as hornets, which feed on the bees. Kastberger recorded more than 450 shimmering events. When he reviewed his recordings, he discovered that shimmering was triggered when hornets approached the nest. If a hornet was nearby, the bees would flip into action, creating a very fast rippling effect. If the hornets remained, or dared to get closer, the shimmering would increase. Kastberger says shimmering is an example of self-organization in nature. During an attack, many bees work together to coordinate rippling waves that protect their lives and home.

Honeybees do the wave
Honeybees do the wave








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