Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

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That's y-A-K-U-L-T dot-C-O-J-P.

When it comes to a guide for your gut, count on Yacolt.

This is Scientific American 60-second science.

I'm Christopher in Daljata. Got a minute?

Ever sit around watching TV while scanning your smartphone or tablet? It's called second screening,

and apparently the instinct to multitask kicks in early, because even infants are doing it these days.

So says a new survey presented at the annual meeting of the

pediatric academic societies in San Diego. Researchers surveyed 370 parents at a hospital in

urban Philadelphia. Nearly every household had a TV. More than three quarters had smartphones and

tablets. According to the parents, infants just six months old were already logging half an hour a day

on mobile devices, and they weren't just watching cartoons. A third were swiping and tapping the

screens, and a quarter of the babies were actually making calls, although probably by accident.

By age two, nearly all the kids were reported to be using tablets and

smartphones, sometimes while glued to the TV. Question is, is that a bad thing? The American

Academy of Pediatrics says yes. Their take is, kids under two shouldn't be staring at screens

at all, because they'll learn more slowly from screens than from interacting with people.

But the researchers behind this new survey say the effect of smartphones and tablets on young

brains isn't that clear. It is new technology, after all. And their agnosticism about mobile

...