Here’s a cool one—literally! The Kelvin scale, used in science, starts at absolute zero—that’s −273.15°C, the point where all molecular motion theoretically stops. But here’s the kicker: the Kelvin scale has no negative numbers because you can’t go colder than absolute zero. It’s the ultimate chill zone!

And fun fact: -40°C is exactly the same as -40°F. It’s the one temperature where Celsius and Fahrenheit shake hands in agreement. ❄️📏🔥