The things you'll find at the bottom of Lake Michigan

I'm JR Radcliffe and this is the Daily Briefing newsletter by the Milwaukee Journal Sentinel. Sign up here to get it sent to your inbox each morning .

We might be seeing our share of rain over the next few days, starting today. Thunderstorms are possible this afternoon and into the evening, with clouds otherwise and a high of 59 degrees.

What do you find at the bottom of Lake Michigan?

The headline and the first paragraph of this story by Caitlin Looby both have me hooked.

"We know more about the surface of Mars than about the floor of Lake Michigan. But what we do know is remarkable."

And then, "Lake Michigan wasn’t always a lake. At least not the lake we know today. Thousands of years, and remnants of past lives, all lie under its surface, from ancient shorelines to a submerged forest, and from ships that plied the water to aircraft that flew over it."

And suddenly I find myself deeply invested in something that has never really crossed my mind before: The bottom of Lake Michigan.

It turns out only 15% of the bottom of the Great Lakes has been mapped in high resolution. Also, did you know the Great Lakes essentially descend from previous generations of lakes, including what we call Lake Algonquin and Lake Chippewa? The lakes themselves are only 6,000 yards old, which is pretty young as, you know, Earth stuff goes.

Strap on your scuba gear and take a deep dive with Caitlin on this lengthy look at what you'll find beneath the surface.

Concert season is just around the corner, and these are the greatest hits

My kids are pretty excited to see AJR at Summerfest (tickets for which they were gifted at Christmas), so I was curious to see where they would land on Piet Levy's list of anticipated concerts in Milwaukee.

They didn't make the list , but it actually kind of makes sense, because the Milwaukee schedule is stacked!

Jelly Roll will co-headline the Harley-Davidson festival. Alanis Morissette is coming back for '90s kids like me. Speaking of the '90s, the Red Hot Chili Peppers are also coming to the Harley celebration. Grupo Firme is coming to town, marking a huge win for followers of Latin music. Noah Kahan, SZA and T-Pain — all huge artists — are bringing their shows to Alpine Valley, Summerfest and The Rave, respectively. And as is custom, Kenny Chesney is coming to American Family Field, with Zac Brown Band, no less.

It's all here, where Piet breaks down what makes these shows so massive.

Don't miss these

Wednesday was a day for a bunch of significant stories on our website, including:

• Mount Horeb middle school reported no injuries except to suspect after an active-shooter situation.
• Our live blog kept up on the latest at protests at college campuses in Wisconsin calling for the cessation of university ties to Israel and for peace in Gaza.
• Former President Donald Trump spoke at a rally in Waukesha ; here were some takeaways from the event.
• Three members of the Brewers were given some significant suspensions for their actions during a brawl in Tuesday's game, but Milwaukee won both that game and again Wednesday.
• Mourning and anger followed the fatal hit-and-run that killed a 4-year-old Milwaukee girl.
• There's a new Amtrak line connecting Milwaukee to the Twin Cities.

JR Radcliffe can be reached at (262) 361-9141 or jradcliffe@gannett.com . Follow him on Twitter at @JRRadcliffe .

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This article originally appeared on Milwaukee Journal Sentinel: The things you'll find at the bottom of Lake Michigan