Unexpected Complexity in a Spider's Tiny Brain

Here is something to keep arachnophobes up at night.

The inside of a spider is under pressure, like the air in a balloon, because spiders move by pushing fluid through valves. They are hydraulic.

This works well for the spiders, but less so for those who want to study what goes on in the brain of a jumping spider, an aristocrat of arachnids that, according to Ronald R. Hoy, a professor of neurobiology and behavior at Cornell University, is one of the smartest of all invertebrates.

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Are Those Spiders Falling From The Sky?

The weather forecast calls for it to be cloudy with a chance of spiders! Erick Reis was leaving an engagement party in Santo Antonio da Plantina in Brazil when he was stunned to see thousands of spiders raining down!

The spiders were crawling up and down silk threads attached to telephone pole wires and trees. The creepy footage was taken in February 2013 and gives the impression of spiders falling from the skies!

As scary as it seems, it turns out that this is a common occurrence with this kind of colonial spider, which is quite social and lives in large communities, catching prey in their huge, interwoven webs. High winds must have blown them out of the woods and into the town!

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