So, after looking at the displays from that particular era, you're able to see what died and why it happened.

A lot of people don't know that Chicago actually sits on an ancient reef. Most of Chicago was under water until [340 million years ago].

The renderings for the first time give us a look at what these creatures looked like and how they moved.

Evolution is a process. As long as there's life on the planet, it can't not happen.

Look at this one coming over here.

We wanted it to be a well-paced journey through time and have it be as comprehensive as possible. I'm confident this is the most comprehensive look at the evolution of life on Earth in the country, if not the world.

It was the biggest predator of the Ice Age. This was the king, the T. rex of the Ice Age.

A lot of people don't realize this is a real research institution. It's nice to be able to highlight scientists' work. This exhibit shows a nice cross-section of scientists.

By conservative estimates, we're losing one species every 15 minutes. We don't have a really good handle on what species are out there yet, let alone what is out there on the brink of extinction.