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This is Scientific American's 60-second science.

I'm Christopher in Taliatta.

Many bats use a system similar to sonar to navigate in the dark. They send out high-frequency sound,

sometimes as clicks, and get information about their surroundings by the timing and quality of the sound

that bounces back. And just as turning up the light in a darkened room helps to

illuminate the objects there, bats are known to turn up the intensity of their clicks when they

have trouble detecting a target. Now bats have had, you know, millions of years of evolution,

basically to sort of develop these mechanisms to dynamically adjust their missions.

Laura Toller, a neuroscientist at Durham University in the UK.

And what we were wondering is, well, do people do the same?

Because some people with impaired vision can indeed navigate

using the echoes of finger snaps, handclaps, or mouth clicks.

But it's not known how dynamic that ability is.

So Taller and her team presented eight expert echo locators with a challenge.

Could they tell whether a small dinner plate-sized object was being held up about three feet from

their head by clicking alone?

...