It's not just cars; San Fransisco is using hybrid buses to help fight global warming. Hybrid just means the engine is using two ways to generate power — most often electricity and gas.

Have you ever seen a hybrid like this before?

Two In One

There are hybrids in the animal world as well. Ever heard of a zeedonk? It's a cross between a zebra and a donkey. It's fun to come up with some names of your own. Here are a few ideas to get you started: What two animals do you think make an elephurkey? A chickelope? Draw the new animals you've created.