A computer scientist shows us how our perception of something can vary from reality, and an engineer shows us how she's building the next generation of self-driving wheelchairs. Jackie Means makes an egg that can bounce, then we learn about the explosive science behind limestone mining.

An ecologist introduces us to an adorable animal called the pika. Dr. Moiya McTier teaches us about exoplanets. Dr. Brain give us tricks to calm our anxiety. And two tribologists explain the sticky science of friction.