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The kids meet Dr. Cordova, a marine biologist who is also Gabriela's mom! Gerald discovers that women can indeed become scientists, and he apologizes to May for saying that she couldn't become one when she grows up. Dr. Cordova explains that as a marine biologist, she investigates animals that live in the ocean. She particularly loves studying whales, and she tells the kids about her exciting job SCUBA diving and studying the sounds whales make. Sid wants to learn more about the sounds squirrels make, so Dr. Cordova introduces the kids to a wildlife biologist, a woman who studies giant pandas.

May wants to become a scientist that draws robots and machines to go explore the planets. Dr. Cordova explains that this is what a robotics engineer does. The kids meet a robotics engineer working on a 20-foot tall robot at the Jet Propulsion Laboratory.

Gerald thinks he'd be really good at investigating how to eat stuff. Dr. Cordova explains that there's a type of scientist who does this too: a chemist! The kids meet a chemist investigating an ice cream that won't fall off the cone. Hear how the chemist discovered a stretchy ice cream in a kitchen lab!

Gabriela thinks she wants to be an astronaut that can fly inside the rockets May will build! Dr. Cordova, introduces the kids to an astronaut so they can learn more. Hear from an astronaut engineer who helps build and fix things in space.

Susie sings about all the different types of "-ologies." Learn how "-ology" means "the study of." Listen to the music video to learn what cardiology, craniology, ecology, zoology, and many more "-ologies" are the study of.