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

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To learn more about Yachtolt, visit yawcult.co.

.jp. 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 American 62nd Science. I'm Julia Rosen. Got a minute?

65 million years ago, a six-mile-wide asteroid crashed into what's now Mexico.

The impact upended Earth's climate, driving up to three quarters of all species extinct, including the dinosaurs.

That's been the accepted explanation for the mass extinction for the last few decades

anyway. But while scientists still think the asteroid dealt dynos in their contemporaries a serious

blow, some have started to wonder if there wasn't another culprit. Around the same time,

huge quantities of lava were bubbling out of present-day India, forming what scientists call a large igneous province.

This is large and huge volumes of lava's flow erupted in a very short time, short time at our

geological scales.

Eric Font, a geoscientist at the University of Lisbon in Portugal.

So imagine a small country like France or Portugal covered by lavas. So a large

Nairos province is this huge eruption, huge amount of continental fluid basalts and volcanic gases.

The gases font refers to include carbon dioxide, sulfuric acid, and other toxic compounds,

which could have caused a host of problems for plants and animals,

like climate change, acid rain, and ocean acidification.

That's why in recent years, researchers have debated whether the eruptions, which created rock formations known as the Deccan traps, may have also played a role in causing the mass extinction.

Now, Font has found more compelling evidence that the eruptions had an impact on life.

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