This is

is Scientific American 60 Second Science.

I'm Christopher Intagiato.

Mosquitoes are precision guided to their prey by plumes of carbon dioxide, heat, and humidity.

Sort of like how we follow our noses sometimes.

It's like us passing a restaurant or something.

We might look at the signs, we might look at the display case,

and we might smell.

It's like a lot of things they do. They're very smart, unfortunately.

Robert Hurt, a chemical engineer at Brown University.

As the Skeeters get closer to us, he says, they also even smell and taste.

They have these things called gustatory receptors.

So they taste chemicals associated with your sweat.

You have bacteria on your skin.

The bacteria metabolize compounds in your sweat and the mosquitoes detect those.

You know what happens next? The bite. But Hurt and his colleagues have discovered a novel

way to block them with graphing, the substance composed of a single layer of carbon atoms.

Heard in his team asked volunteers to stick their arms into a box full of mosquitoes.

We don't actually disclose who those subjects know we were we were closely involved.

In other words he will neither confirm nor deny that he and his colleagues were subjects.

So whoever the subjects were when they had no skin protection the mosquitoes

swarmed and bit the skin. However with a graphing based patch on the skin

...