Dr. Bruckner demonstrates cloning by injecting the blood cells of a black rabbit into a white rabbit egg.

Nano sensors combine nano technology and robotics to hopefully be able to treat diseases in the future. These nano sensors have the five senses and can help doctors in gaining new data in patients.

Doug Kinney meets the fourth clone of himself, and he struggles to deal with the many versions of himself.

The nanoscale meaning billionth of a meter in scale is an area of research scientists are looking towards to learn about material structure and application in medicine and electronics.

Sophie tackles the question of why there are so many different breeds of dogs. She briefly discusses the history of dogs and discusses how genetics makes dogs different and why some breeds are better suited for certain functions.