Hi, we've got three stories from Curiosity.com, plus the answer to a question from a curious listener like you to help

to get smarter in just a few minutes. I'm Cody Goth.

And I'm Ashley Hamer. Today you'll learn about a controversial theory that says our universe is one of many previous universes

Why we call computer glitches bugs and the largest study ever showing how much exercise you need to boost your mental health

We'll also answer the question is yawning contagious how much exercise you need to boost your mental health.

We'll also answer the question,

is yawning contagious?

Oh, let's satisfy some curiosity.

There's a theory that our universe is just the latest of many universes. It comes from Roger Penrose, a

legendary physicist who's worked with Stephen Hawking, so he's kind of a big deal.

And fans of the theory say they can prove it. So today let's talk about the universe. We like to start

small here on the capacity. Just ease into it with the entire existence of

everything. Yeah, we're not.

So Roger Penrose does not subscribe to the Big Bang theory.

Instead, he champions what's called Conformal Cyclic Cosmology, or CCC.

This theory says that our Big Bang was not the first bang and it won't be the last.

The idea is that there's a Big Bang, then cosmic structures form, and finally everything cools down. Eventually all the stars die and only black

holes are left until they evaporate and leave behind nothing but disparate particles.

Here's the kicker. At that point, our universe is indistinguishable from a

singularity and another universe emerges from it in its own big bang. Now to

figure out what happened in the early days of our universe when it was just a dense plasma soup buzzing with subatomic particles,

cosmologists look at the leftover radiation from that time period.

...