10 Astounding Facts About Extremely Low Temperatures

(via Listverse) Over the past 150 years, scientists have developed a number of methods for reaching extremely low temperatures. Fluids like liquid nitrogen and liquid helium, both of which have significantly low boiling points, have been put to use across numerous fields. More recently, laser cooling techniques have also been deployed. From a levitating magnetic railway system and ultrasmooth novelty ice cream to state-of-the-art medical scanners, lunar cold traps, and so much more, extreme cold is proving essential for the next wave of scientific developments.