Moose start overheating at temperatures most animals would call mild. With no efficient way to sweat, they rely on shade, wet ground, and cold water immersion to survive the hottest hours of a boreal summer — a strategy now under growing pressure as northern summers warm

In physics labs around the world, atoms are cooled to within a hair’s breadth of absolute zero to build the most accurate clocks ever made. Heat blurs an atom’s true signal through motion and background noise — cold strips that noise away. The same underlying logic, stripped of its noise, echoes in a much more human practice