Fritz Haber feeds the world and murders it with the same technology. Contaminated heroin freezes addicts like statues and the cure uses fetal brain cells. An actress foresees cellphones and wi-fi but isn't taken seriously.

The Stanford Prison Experiment, one of the most notorious in the history of science. A doctor takes a lethal dose of cocaine as an experiment. A dentist tries to bomb Japan with tiny bombs carried by millions of bats.

US government experiments illegally on black men with syphilis for 40 years. N-rays will transform physics in France, if they exist. 9 skiers found dead with strange injuries. Was it a quarrel, a secret Soviet weapon, or a yeti?

A chemical that speeds up the flowering process in soybeans turns into a weapon during Vietnam. Ben Franklin investigates hypnotism. Albert Geyser invents a deadly new beauty treatment.

In an experiment, students are mocked for their beliefs as researchers study them. One goes on to become the Unabomber. Leaded gasoline poisons more people than anything else. Russian scientists protect their work from Nazis.

Jose Delgado begins to discover how to electronically control the mind. A doctor at Edinburgh University doesn't ask any questions when two men begin supplying him with fresh human cadavers. Scientist Phillip Lenard leads a vendetta against Einstein.

A Pavlov student repeats this experiment on orphans to prove that they are nothing more than animals. In 2001 red rain falls in India; it seems to be filled with biological cells. A glow in the dark paint used during WWI contains a deadly ingredient.

A musical genius is forced to create the most brilliant piece of spy technology ever. Wendell Johnson researches his own stutter -- but turns to orphans for experimentation. John Ziegler introduces steroids to athletes.

A man combined occult and rockets to produce the tech of Mutually Assured Destruction. A skull found in 1912 seems to solve Darwin's puzzle of where we came from. Mary Mallon infects hundreds with typhoid despite being healthy.

What would happen if we got a message from space? How would we react? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact of this world changing event, forming an intriguing hypothetical scenario

How will humans react when an alien spacecraft is on its way to Earth? Will humans learn from aliens, or become colonial subjects? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact.

The Arrival has ended. A swarm of small spacecraft depart their huge mothership, and hover in our atmosphere. The ships open their hatches, and deposit thousands of mysterious pods on the earth’s surface. Are they a message, a gift or a weapon?

A mothership the size of Texas is hovering over Earth and we're tired of waiting. We send a rover to explore, and what we find makes us question the definition of life. On Earth, the pods multiply, making contact with them unavoidable.

At HowStuffWorks, boss Steve invites a man with alien hand syndrome for an interview. The hand holds a grudge against Josh, and Jeri catches it all on camera. During the podcast the guys cover brain anomalies and disorders.

Josh and Chuck go on a police ride-along, but find t's nothing like on TV -- and nearly end up in the slammer. Meanwhile Steve considers adding a high-profile host to their podcast. The guys podcast about crime scene investigation.

At HowStuffWorks, construction stirs a bee hive. Chuck stands his ground despite being allergic, and Steve adopts a bee colony managerial style. During the podcast the guys cover hive intelligence, bee aggression myths and colony collapse.