Rusty Weise works as as a computer engineer but can turn his hand to anything. Restoring vintage cars, knitting Aran jumpers, throwing pottery, playing the harp – he’s done it all and more besides.

Tulum has evolved over the past decade—but the barefoot ease that first drew travelers persists.

Donut Lab, a previously unknown Finnish company, unveiled a solid-state battery with implications so profound that it drew light away from what several watchers saw as the event’s real headline: ...