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.

Yachtold 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 YacL.

This is Scientific Americans' 60-second science.

I'm Steve Merski.

Got a minute?

In a massive data crunching analysis, researchers have created a new evolutionary tree for birds.

The effort required enormous computing power and new algorithms because it involved the whole genomes rather than just a few genes of 48 species of birds

to establish their relatedness. The study is the first of its kind for vertebrates.

It contradicts morphology-based trees. It contradicts mitochondrial trees. It supports more

trees based upon nuclear genes, although those trees weren't highly resolved than this one is.

Eric Jarvis of the Howard Hughes Medical Institute and Duke University Medical Center,

one of the leaders of the whole genome sequence analysis effort.

Multiple papers related to this work are in the December 12th special issue of the journal Science.

Jarvis previewed the studies in a talk he gave October 19th at the Science Writers'

2014 meeting in Columbus, Ohio.

We decided we wanted to make a big effort to focus on birds because each of us had some aspects

that we liked about bird biology. But something was practical about that as well.

Bird genomes, in terms of genome size,

...