Journalist Alok Jha is trapped in the ice off the coast of Antarctica, and neuroscientist Rita Tavares attempts to analyze her romantic problems with science.

Ecologist Evon Hekkala must confront a man-eating croc, and criminologist Stan Stojkovic receives a letter from a convicted murderer.

Marine biology grad student Liz Neeley and criminologist Heith Copes confront the messy reality of the field.

Naturalist Helen Cheng leaves Brooklyn for her first experience in the field, and ecologist Thom Young-Bayer decides to leave science.

Drew Prochaska attempts to confront his fear of sharks, and attorney Heather Cucolo navigates the complicated psychology surrounding sex offenders.

Mark Pagán finds an unconventional solution to his phobia, and military surgeon Rob Lim must operate during a sandstorm in Iraq.

Scientist Faith Dukes wonders if there’s something wrong with her when she fails to couple up, and Cara Gael O'Regan is startled when she tests positive for syphilis.

Bri Riggio struggles to understand the psychology behind her eating disorder, and expert in global risk Seth Baum tries to find a solution to the threat of nuclear winter.

Molecular biologist Maryam Zaringhalam discovers something strange about her sense of smell, and Hillary Savoie’s daughter is born with a rare genetic mutation.

Bioethicist Elizabeth Yuko uses her science training to report a sexual assault, and engineer Selam Gano returns to her father’s village in Ethiopia for a water project.