Hey, it's Zoe Ball and Joe Wiley here from the Digit podcast, and we're currently sponsored by the Woodland Trust.

The Woodland Trust lets you dedicate a tree, a bench, even a whole area of woodland in someone's name.

Plus, all of the Woodland Trust's sites are free to visit, so you can go and see it any time.

It really is a gift that keeps growing and every dedication

directly supports the Woodland Trust's vital work. So if Woods are your happy place or theirs,

this is just a beautiful way to celebrate a birthday, a wedding, anniversary, anything really.

Visit woodlandtrust.org.org.org.org slash dig it. Full terms and conditions can be found on the Woodland Trust website.

I'm John Bachelor, Professor Leila Philip.

Her book is Beaverland, how one weird rodent made America.

Two huge rainstorms and then a hurricane named Ida. We're now at a

Edwin Way-Teele's sanctuary for, he's a naturalist who's left us, but behind is a sanctuary

for all manner of creatures, including beavers. And one day, the beaver dam that is constructed,

series of beaver dams,

but the big one is breached, and the floodwaters pour into the neighborhood,

and the phones start ringing.

And there is a solution, and we call upon Mike Callahan of beaver solutions.

And what is the solution, Professor?

What does it look like when we don't have

enough beavers and we have to deal with climate change upon us? Well, this is a really interesting

example of where just the director of that local Audubon, Sarah Hemingway, was educated about beavers and she understood their value in bringing

water and biodiversity.

She knew that particular spot in particular as a migratory stopover for a lot of important

...