Climate scientist Kim Cobb is exploring a cave in Borneo when rocks begin to fall, and neurobiologist Lyl Tomlinson is startled when he's accused of stealing cocaine from his former lab.

After living with a stutter all her life, Sara Street thinks coding might be the solution to her communication problems, and electrical engineer Anna Fox longs to share her work with her family, but struggles with how to explain it.

Neuroscientist Lauren Vetere is excited to see if real life will mimic science at an interfaith event, and growing up as a devout Jew, Fred Gould’s relationship with God is shaken by existential philosophy and science.

As a teenager, Mark Pagan worries that having an old dad is affecting his social development, and curious about his DNA, Christopher Rivas takes his father on a journey to the Dominican Republic to learn about his family history.