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.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.j.p.

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 Americans' 60-second science.

I'm Karen Hopkins. This will just take a minute.

Streets can be a dangerous place for bicycles. In 2013, nearly 750 cyclists were killed in the U.S. from being hit by a car. And of the 48,000 cycling injuries that were reported that year, nearly a third involved a motor vehicle.

Now, a new study suggests that signs sporting just five words could help show drivers and bike riders how to share the road.

By not saying, share the road.

In all 50 states, traffic regulations state that bicycles should be treated as vehicles, which means that they have the same rights as cars when it comes to using the roads. But those rules are not always clear. Signs that urge motorists to share the road are ambiguous. Cyclists may assume they mean that cars should make room for bikes, but some drivers may think they're saying that bikes should get

out of the way of traffic. To see how such signs influence how people think about bike rider's rights,

researchers recruited 1,800 volunteers to take a quick survey. Subjects were shown one of four images.

Some saw a street with a traditional shared the road sign. Some saw an image of a bicycle painted on the pavement in a shared lane. Some saw a street with a traditional shared the road sign. Some saw an image of a bicycle painted on the pavement in a shared lane.

Some saw signs that read,

Bicycles may use full lane, and some saw a street with no instructions at all.

They then answered some questions about road etiquette.

Turns out that folks who saw the sign explicitly noting that bikes can use the full lane

were the most likely to recognize cyclist's rights to be on the road.

And the ambiguous share-the-road suggestion?

It had about the same influence on the study subjects as no sign at all.

...