Take a quick break from election-related news to get a lesson on drawing this squishy, curious creature from Amy Hwang. They are deceptively not as easy to draw, I think, as people would think, but ...

Symmetry is a feature of many plants, animals and even some molecules — like water. But that’s not the case with snails and their coiled shells. They are chiral — asymmetrical in such a way that they ...