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.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans 60 Second Science.

I'm Jason Goldman.

More than 200 million people get malaria each year, and about half a million die.

Mostly in Africa, many of them children.

And those staggering numbers are an improvement.

Malaria deaths have been cut in half since 2000. In many places, a remarkably simple tool has led the fight. Bed nets, treated with a mild insecticide that stop mosquitoes

from biting people in their sleep. Both people and mosquitoes are pawns in the malaria

transmission cycle.

If an infected person gets bitten by a mosquito, the parasite gets picked up along with the blood meal.

That mosquito can then transfer the parasite to the next person it bites.

Bed nets help stop mosquitoes from easy attacks on motionless sleepers.

But now, some mosquitoes seem to be giving up the night shift. Malaria mosquitoes in Africa tend to shift their biting behavior. Entomologist

Uno-Sah from Penn State University's Center for Infectious Disease Dynamics. Normally they tend to bite people during the night, but because of extensive use of bed nets,

these mosquitoes started biting in the early evening or in the mornings.

The assumption is that the bed nets are weeding out the nighttime bitters, while not

affecting the mosquitoes

that prefer feeding at other times. So those mosquitoes are thriving. Soa and his team wanted to know

...