Hi friends, it's me Mark. I'm just dropping in to tell you about a virtual party brains on is having Saturday, July 29th

It's free and you're invited

Not only are we celebrating our 10th birthday, we're also super excited to share our newest book with you

It's called meet my micro pets. The book is a fact-filled

hilarious journey through the weird and wonderful world of microbes. I know I know you're thinking

But Mark, will there be cool games at this virtual party on July 29th?

I mean, yeah, only the coolest and before you ask

There will absolutely be epic stories and yes

Molly Sandin and I will be there answering as many questions as we can during the whole event

This is a one-time only live virtual party. You do not want to miss again. It's on Saturday, July 29th

11 a.m. Pacific one p.m. Central and two p.m. Eastern had to brains on dot org slash events for a link to sign up

That's brains on dot org slash events. See you on July 29th

You're listening to brains on where we're serious about being curious

I

Am your host Molly Bloom and here with me today is co-host Alex Marriott who is 12. Hi Alex. Hello Molly

We've gotten a lot of questions about bridges and tunnels. How do bridges stay up? How are tunnels built?

How do they build bridges over water? How do they put tunnels underwater to answer these questions?

We're staging a little friendly competition

bridges versus tunnels

We asked you to tell us which you like better bridges or tunnels and we'll be playing some of your answers throughout the show

We'll start with siblings Addison and Heath from Navasota, Texas. I like tunnels because sometimes it's underwater

And sometimes they're under the ground

...