In a battle over her apartment's air quality, cat foster mom Tracy Rowland discovers how to use her kitten's parasite as a weapon, and Gianmarco Soresi learns more about cats than he ever wanted to when his girlfriend adopts five.

As a sixth grader, Anna Neu decides she's going to fall in love at science camp, and at age nine, Anicca Harriot plans to study both the heart and space, but as she gets older, that plan becomes more challenging than she expected.

When conservation scientist Laura Kehoe writes about a surprising chimp behavior, the media takes it wildly out of context and the situation spirals out of control, and when The Colbert Report calls about her research, marine biologist Skylar Bayer finds an unexpected collaborator and friend in the fisherman helping her get scallops.

Overwhelmed by setbacks as she pursues her academic ambitions, Tricia Hersey discovers an unexpected solution to her stress, and evolutionary biologist Sarah Hird's first pregnancy becomes a crisis in her scientific faith when doctors warn her that there may be something severely wrong with her baby.