Fashion Gets Down and Dirty

On Saturday evening, a small group of German coal miners — in full gear, from headlamps to black boots — marched into Times Square to sing a song. The men’s coal-streaked faces were somber as they clutched their dust-smeared white overalls and sang the “Steigerlied,” the traditional miner’s song with origins in the 16th century,…

How Do You Dress a Russian Doll?

What would you wear if you could attend your own funeral? Don’t ask Nadia, the tart protagonist of the Netflix series “Russian Doll,” who dies and springs back to life in each of the eight episodes, never surviving quite long enough to seriously ponder the question. Chances are Nadia would deck herself out in some…

The Perfect Valentine? A Math Formula

Meet Süss, a math widget after your own heart: Like many geometric figures, a heart can be captured in all its curvaceous glory by a single algebraic equation. The equation for a sphere looks simple enough: x²+y²+z²=1. A heart is something more complex: (x²+((1+b)y)²+z²-1)³-x²z³-ay²z³=0 Süss — German for “sweet” — is an interactive widget that…