Yeah, yeah, the Large Hadron Collider is in no real danger of accidentally opening up a black hole that swallows the world when it's finally fired up on August 7. We know. But still, we sometimes like to pretend it is, and this is where Cern's LHC cooldown status website comes in. Using it you can track the current temperatures of its 1600+ superconducting magnets in real time. But what should you be looking for?
To do their particle-colliding business, the LHC's magnets must be kept ultra-cool-close to absolute zero in fact, which is a frosty -459.67 degrees F. And by the looks of it, many of the magnets are near operating temperature already. To keep them that cold, liquid helium is used, which is only liquid at extremely low temperatures. The highest temperature scale on the status website only goes up to 100K (-279.67 degrees F), so we're not really watching for "meltdowns" in the strictest sense of the word. But if the temperatures start rising to near the top of the scale, you know something is afoot. No doomsday scenarious, but still, feel free to shout out SECTOR 7 ARC MAGNET TEMPERATURES RISING! [LHC Cooldown Status via Bad Astronomy]