It is interesting that there is a maximum amount of cold (absolute zero) whereas there is no maximum amount of hotness. Near absolute zero (or the coldest temperature in the universe) has been created on Earth only recently -- in a laboratory.

Quoted: Albert Einstein and the Indian physicist Satyendra Bose predicted in 1925 that scientists could generate such matter by subjecting atoms to temperatures approaching absolute zero. Seventy years later, Ketterle, working at M.I.T., and almost simultaneously, Carl Wieman, working at the University of Colorado at Boulder, and Eric Cornell of the National Institute of Standards and Technology in Boulder created the first Bose-Einstein condensates.
...
Ultimately, Ketterle, like many physicists, hopes to discover new forms of matter that could act as superconductors at room temperature, which would revolutionize how humans use energy.