Heather Abbott-Lyon and her husband, both chemists, try to balance their love and science, and Tracey Segarra must choose her newborn daughter's surgeon.

Neuroscientist Devon Collins encounters racism in academia, and OB-GYN Veronica Ades struggles to save a pregnant woman's life in South Sudan.

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.