A nuclear engineer shows the radioactive decay that's all around; a STEM educator races lunar rovers on Earth and inspired by NASA's own lunar missions; Dr. Brain explains the science behind anxiety; civil engineers make maps of the wild.

A wildlife biologist tracks animals in the Alaskan forest; a teacher shows how she inspires the next generation of STEM innovators; the life cycle of stars; the future of alternative power through the use of hydrokinetic turbines.