12-year-old Jirard Khalil's mother suddenly starts acting strangely, and a teacher’s social experiment traps fifth-grade Ben Lillie in an ethical dilemma.

ER doctor Bess Stillman treats a patient with an interesting dilemma, and teenage Brendan Bane becomes obsessed with collecting poisonous pets.

Developmental biologist Pamela Feliciano tries to understand her autistic son, and science writer Katharine Gammon thinks she's gone into labor though her doctor says she hasn't.

As a college student Sarah Demers gets a job working on a particle detector, and Katy Rodriguez-Wimberley tries to find her place after being discouraged from science.