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cover of May 30, 2015 issue

Life

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Here’s how bacteria drive everything from brain health to mating

What you see here are three people enjoying their day at the beach. What you don’t see are the many, many microbes that are an integral part of their bodies. Indeed, in terms of the numbers of cells present, we are all more bacterial than human.

A traveler shows off a massive coco-de-mer nut. This palm seed’s shape isn’t obvious until an outer green husk is stripped off.

A traveler shows off a massive coco-de-mer nut. This palm seed’s shape isn’t obvious until an outer green husk is stripped off. Photo credit: Niall Corbet

Fruit flies, shown here, are used in many sleep experiments. New data show sleep can restore memory in even the most forgetful fruit flies.

Fruit flies, shown here, are used in many sleep experiments. New data show sleep can boost their ability to remember things. 

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