What is radiation, and why won't it give you superpowers? How can we shield future generations from nuclear waste? What's the Oh-My-God particle? And, most crucially of all, how many bananas does it take to crush a person to death?  Physical Attraction takes a brief dive into the world of the electromagnetic spectrum and other forms of radiation. This week's chat-up line: Are you emitting light in the visible spectrum, because you're... unusually hot