"A team of researchers has presented the coldest ever recorded temperature on Earth: minus 136 degrees Fahrenheit (or, minus 93.2 Celsius)"www.csmonitor.com/Science/2013/1210/How-cold-is-the-coldest-place-on-Earth In depressions in antartica on 10 Aug 2010. The interesting thing about this is that dry ice (froen carbon dioxide) forms at -78.5C (-109.3F) at Earth atmospheric pressures. Mars has a carbon dioxide seasonal "ice" cap. It would now appear that the Earth does too. -- Warren D. Smith This is clearly a measurement error since the tetrahedral bond ∠ is 109.471°. -- Dr. I. J. Matrix "Global warming, my assicle."