Willis Tower

"What is that?" you ask.

C'mon, people, it soon will be the tallest building in the Western Hemisphere! Know your landmarks!

"What about Sears Tower?" you ask.

OK, so you're not too uninformed.

Maybe you just didn't hear that Sears Tower no longer will exist - at least by that name - come this summer. It will be renamed Willis Tower.

"What?!" you ask.

Now that's a good question.

But it's true. Go read about it at chicagotribune.com.