An already volatile situation inside the infected research facility boils to a head. Jaax ultimately must face the ramifications of trying to balance her dangerous career and her loving family.

Jack chases his dream of being accepted by a group of wild kangaroos.

A bonobo’s exam gets off to a rocky start, and a Bactrian deer needs medical attention.

Phil Keoghan visits a volcano, light changes lives in Tanzania, horse cloning impacts disease and Americans prep for a nuclear attack.