Environmental engineer Siddhartha Roy discovers unsafe water in Flint, Michigan, and sociologist Ada Cheng studies human rights violations in Hong Kong.

Geneticist Sebastian Alvarado tries to recreate comic-book science, and third-grader Danny Artese decides to become a plant.

Blind athlete Simon Wheatcroft finds a way to run marathons by himself, and computer science student Dale Markowitz goes all-in on an ambitious project.

Neuroscientist Qi Lin can’t escape her scientific mindset, and attorney Michael Perlin makes a startling discovery while interviewing prisoners who are unfit to stand trial.

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.