For Bats, All Smooth, Horizontal Surfaces Are Water

trying to drink from a smooth metal plate.

For bats, any smooth, horizontal surface is water. That’s true even if vision, olfaction or touch tells them that the surface is actually a metal, plastic or wooden plate. Bats therefore rely more on their ears than on any other sensory system. This is due to how smooth surfaces reflect the echolocation calls of bats: they act just like mirrors. In nature there are no other extended, smooth surfaces, so these mirror properties prove to be a reliable feature for recognition of water surfaces.

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Workers Hold Key to Power in Nature’s Oldest Societies

Some are stronger than others!

A new study analysing how complex, highly-evolved societies are organised in nature has found that it is workers that play a pivotal role in creating well-ordered societies where conflict is minimised. For when it comes to determining who reproduces in ants, University of Leicester biologists have found the humble worker is queenmaker — it is they who choose their queen.

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“How to” Raise Giant Insects!

Imagine going fishing and catching this!

The giant dragonflies of ancient Earth with wingspans of up to 70 centimeters (28 inches) are generally attributed to higher oxygen atmospheric levels in the atmosphere in the past. New experiments in raising modern insects in various oxygen-enriched atmospheres have confirmed that dragonflies grow bigger with more oxygen, or hyperoxia.

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