And I'm here in the Dinosaur Hall at the Natural History Museum of Los Angeles County.

How did dinosaurs grow up?

Well, for a long time, we paleontologists couldn't answer that question, but now we can.

More recently, we've had more dinosaurs found, and we've got a new tool.

We can slice the leg bones of dinosaurs and look at the growth rings and see how old they were when the animals died.

And from that information we're able to reconstruct the whole life pattern of a particular dinosaur, like T. rex.

Tyrannosaurus rex is a giant carnivore.

You all know that.

It lived in the Late Cretaceous time period.

Behind me are three Tyrannosaurus rex skeletons: a 2-year-old, a 14-year-old, and a 17-year-old, and it turns out that T. rex grew up kind of like us.

They started slow and they had a growth spurt when they were younger.

They slowed down for a while, and then in their teenage years they had a big growth spurt and they kind of stop growing around 20 years old, which is pretty phenomenal.

So the next time that you measure yourself to see how tall you are, remember, you're growing up just like T. rex.

Okay, get outside, get into nature, and make your own discoveries.

- Hello, folks.

It's me, the Conductor.