Stuff You Should Know — science

We all scream for ice cream, sure, but did you know we’re all technically screaming about a colloidal foam? Prepare for deep cravings that will surely emerge as you learn the history of ice cream, how to make it yourself and lots more.

For at least the last 200,000 years, between 10-15% of the human population are left-handed and this fact has utterly left science baffled. In searching to explain handedness, all sorts of contradictory evidence has emerged, creating a fascinating mystery.  

Women consistently rate scent as the most important factor in a man’s attractiveness and men have been manipulating that for centuries with scents of all sorts. Learn about the fascinating history -- and, well, art -- of making perfumes in this episode.