Hi, I'm Bishop Sand. I'm a producer here at the Washington Post.

And we've been working on a new podcast series that we think you're going to love.

It's called Field Trip. You're about to hear a sneak peek of the show.

After that, a quick favor, please look it up on your favorite podcast app and hit follow.

That way you won't miss an episode. Thanks. Here's a trailer.

I have this great poster of Abraham Lincoln. It was a gift from a high school history

teacher named Michael. He sent it after listening to my first podcast, Presidential.

And my favorite part is the sticky note he put on the back. He wrote, fun fact, June, 1864.

President Lincoln signs the Asemite Valley Granite, protecting trees he'd never seen.

What wisdom did he have? What wisdom did he have?

Lincoln's move to protect you, Asemite's giant Sequoias actually laid the groundwork for the entire

national park system. But generations after the national parks were first created,

there's still so much we're trying to get right. So much more wisdom we need to gain.

It's the kind of perspective you get after going on a really great field trip.

Three, two, one.

Oh my gosh. Oh my gosh.

This is the hourglass. Now you know why we fight so hard.

Over the past year I have traveled the country visiting national parks and meeting some of the

people who care about their fate the most. What do you think is like the biggest threat you're

worried about for you, Asemite? Hard to get beyond climate change. When we went up to get sage

a couple days ago, there was white people telling my mom that she couldn't pick anything.

They're telling my Indian mother and she goes, have you read your treaty lately?

...