In high school, Saad Sarwana decides to go from nerd to bad boy with a prank that he learned in chemistry class, and as a college student, Andrew Akira Hansen loves chemistry so much that he takes his experiments out of the lab and into the parking lot... and the shower... and anywhere else he could.

After leaving class early, Sonia Zárate gets a startling phone call about her daughter, and an indoor kid at heart, Sam Dingman goes on a hike anyways and ends up making a shocking discovery.

Erik Vance's first job reporting on scientific research doesn't smell as much like success as it smells like manure and Liz Neeley observes hypnosis from the inside when she becomes the subject of the experiment.

In difficult times, park ranger Gary Bremen takes solace in "sea hearts" that wash ashore, and when Dawn Fraser finds out that she and her twin brother, Dwayne, who was born with Down Syndrome, are one in a million, she searches for other twins like them.

While running an errand, Andrea Azarian happens upon a lost horse that needs her help, and left in charge of the farm for the first time, Gwynne Hogan panics when a goat goes into labor.

Transporting virginal fruit flies from Houston to Honolulu proves to be no easy task for Patricia Savant, and when a storm rocks the cruise ship where he works, Mike Funergy worries about how the elderly passengers will handle it.

When Saurin Choksi starts dating a neuroscientist, it challenges his assumptions about gender roles, and Wendy Suzuki's trajectory as a neuroscientist is forever altered by a passionate love affair in Paris.

Jamie Brickhouse's HIV-positive status becomes a point of tension at the dentist's office, and diagnosed with autism spectrum disorder as a child, Anders Lee struggles with this identity as an adult preparing to donate sperm.

After her mom's version of the sex talk confuses her, Khadija Aweis is determined to make sure her little brother has clarity, and when Leesha Maliakal takes on an ambitious research project designing an app for marathon spectators, her supportive dad tries to help.

When his mother his diagnosed with breast cancer, Ian has to take care of her, even though she didn't always do the best job of taking care of him, determined to make it on her own, Yaihara Fortis Santiago leaves her home in Puerto Rico for grad school, but her father still wants to protect her.