An unfortunate diagnosis sabotages Lindzi Wessel's new relationship, and marine biologist Skylar Bayer and first mate Thom Young fall in love aboard a boat.

Biologist Nadia Singh doesn’t want children, but her husband issues an ultimatum, and Kinari Webb’s philosophy as a scientist is shaped by her experience of the Berlin Wall.

As a schoolteacher, Jeff Braden gets a strange phone call from a renowned chimpanzee expert, and biologist Latasha Wright must confront her fear of open water when invited to visit a coral reef.

Rashawn Ray’s trajectory as a sociologist is altered by a police shooting, and ecologist Marcelo Ardón Sayao turns to both science and religion in a difficult time.

Science writer Ed Yong comes face to face with a wild rhino in South Africa, and scientist Gifford Wong must resuscitate a seal in Antarctica.

Pediatrician Ken Haller comes across a disturbing X-ray, and neuroscientist Maureen Boyle's relationship with her sister is complicated when she begins working on drug policy.

To make ends meet as a student, Cris Gray takes on a tough job in a university lab, and Raychelle Burks learns how to cope with death as a forensic chemist.

Raised a creationist, Adam Andis grows up to be an evolutionary biologist, and Angel Yau excels in sixth grade science with the help of her mom.

As a young bio major, Margot Wohl spends a summer with a sexist colleague, and physics student Stephanie Loeb is intimidated by her enigmatic project leader.