And now for today's Roblox Winter Weather Alert,

I Heartland on Roblox has been walloped by a winter snow storm.

It is a winter wonderland.

You can now ice skate at State Farm Park.

In State Farm neighborhood, you can compete in snowball fights,

grab a hot cocoa and cookies, and more.

There's also special events from your favorite artists and podcasters all month,

along with scavenger hunts, exclusive content, and unique items.

So enjoy the festive winter weather at I Heartland on Roblox.

Head to iHeartRadio.com slash I Heartland today.

Welcome to Stuff You Missed in History class,

a production of I Heart Radio.

Hello and welcome to the podcast.

I'm Tracy V. Wilson, and I'm Holly Fry.

Today we're going to talk about an innovation that dramatically changed

how people around the world have dealt with food, and that's canning.

It is a topic that has been on both of our short lists for a while.

Yeah, I think we talked about it like four years ago.

Yeah, four years ago, and then more recently,

it's been a thing that has come up a bunch of times.

I started thinking about it again earlier on in the pandemic.

Here in the US and in other parts of the world,

...