Word of the Day-Thermal Runaway

Thermal Runaway- When handled improperly, or if manufactured defectively, some rechargeable batteries can experience thermal runaway resulting in overheating.

But I think of firing kilns that are unattended:



http://donkerstudio.org/Subpages/about_that_meltdown.htm

http://ceramicartsdaily.org/firing-techniques/electric-kiln-firing/ten-basics-of-firing-electric-kilns/

NEVER FIRE UNATTENDED!!