Adrenochrome (an blood adrenaline concentration extracted from living creatures), the Conspiracies surrounding it and some interesting hypothetical scenarios are discussed.
Story:
After being informed by NASA scientists that a trip to Alpha Centuri would be lethal unless their bodies were conditioned properly to withstand being displaced from time, the clone duo set off to find a way to improve their bodies. Their search leads them to the Freemason library where Cristina discovers a substance known as Adrenochrome. This might be the solution.