Plug your nose, folks, because "poop streak science" goes well beyond the toilet bowl. Also, we plunge into the data (and psychology) of German "flings" and make an appeal for a bit – just a bit – of quiet.

You know what's better than five fingers? Six. We look at this strange new research and talk to a "polydactyl" himself. Also, go barefoot, but then put some shoes on to meet a young German woman with "foot phobia."

He was the most famous scientist in the world when he was alive. And then he was forgotten. Join us on the 250th birthday of scientist Alexander von Humboldt as we try (in vain) to summarize his achievements.

On the ground, up in the air, and in the belly of a barge — science is everywhere. Zip around with us to as we dip into batteries, inhale some helium and look inside a robot's brain.

Drive into a child, or swerve and hit two grandparents? Such horrendously difficult choices will soon be programmed into ours cars. Cast your own vote in this moral bloodbath of an episode.