Ever sat in a room that already feels comfortable and nudged the heater up by just half a degree? You probably didn’t notice much of a difference — maybe just a faint sense that the air felt slightly warmer. But when it comes to Earth, that same small increase doesn’t go unnoticed. If the planet’s natural “heater” turns up by even half a degree, the effects don’t stay subtle — they ripple through weather, land, oceans, and everyday life around the world. Preventing the turning up of the heat...