This is a case for Andy Warhol. You've heard his name. You've seen the Campbell's Soup cans. You might know something about The Factory. But perhaps you've wondered why Andy Warhol gets so much attention or why his work even matters. What's the deal with Warhol, and is he worth your time and consideration? Here's your answer.

This is a case for Mark Rothko. Rectangles after rectangles after rectangles. Rothko was a truly prolific artist who found his groove painting hazy swatches of color and stuck with it until the very end. Maybe you've wondered what the point of it all is, or why he did seemingly the same thing over and over again. Here's your answer. Stay tuned for cases for other artists, living and dead!

For much of human history, people made art by trying to represent the world as it appeared around them. Until about 100 years ago, when a bunch of artists stopped trying to do that. It was shocking then and it still upsets and confounds today. How are we supposed to deal with art completely removed from recognizable objects? And why should we? This is the case for Abstraction. Created by The Art Assignment.

Ai Weiwei has been called an iconoclast, a radical, a voice for the voiceless, and was once named the most powerful artist in the world. Who is Ai Weiwei? And why is he considered one of the most renowned artists of our time?

Sampling, appropriating, borrowing, stealing. Whatever you want to call it, artists have been copying since time immemorial. We look into the history of the practice, and share our theories of why it is done, and what it can offer us.

You’ve heard of Jackson Pollock and know of his infamous “drip paintings,” but what is it that you’re supposed to do when you look at his work today? Why did it cause shockwaves in 1947, and what does it mean now? We explore the life, evolution, and legacy of Jackson Pollock.

EARTHWORKS. LAND ART. EARTH ART. Whatever you call it, we look at what it means to make art out in nature and in the world from the 1960s to today.

You've probably seen a few cubes sitting in an art gallery and questioned why they were there. How could cubes be important? How did we get here? This is the case for Minimalism.

Dubious of performance art? Break into a cold sweat when you realize it’s about to begin? There’s a reason. Here we present you with a brief history of performance art and attempt to sway you to its potential charms. Let us know if you buy it. The paintings in the first scene are by Candida Alvarez (www.candidaalvarez.com), from her exhibition 'mambomountain' at Hyde Park Art Center, Chicago. Photo by Tom van Eynde.

Yoko Ono was an established artist before most of the world heard of her in 1968, and she continues to make groundbreaking work to this day. Who is Yoko Ono? What is her work? And why should you take her seriously? This is the case for Yoko Ono.