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• The following are useful formulas for converting degrees Fahrenheit to Celsius (Centigrade) and vice versa:
• Temperature in degrees Fahrenheit = (Temperature in degrees Celsius x 1.8) + 32
  
• Temperature in degrees Celsius = (Temperature in degrees Fahrenheit - 32) x (5 / 9)
  
• An interesting temperature related fact is that Fahrenheit and Celsius are equal at -40 degrees.
  
• Recent increases in the Earth’s temperature have been linked to human activity such as the burning of fossil fuels. Global warming has become an important issue for governments around the world and a number of organizations have been created to help deal with climate change.
  
• The hottest temperature ever recorded on Earth is 57.8 °C (136 °F), recorded in Al 'Aziziyah, Libya on September 13, 1922.
  
• The coldest temperature ever recorded on Earth is −89.2 °C (−128.6 °F), recorded at Vostok Station, Antarctica on July 21, 1983.
  
• The highest temperature ever recorded in the USA is 56.7 °C (134 °F), recorded in Death Valley, California on July 10, 1913.
  
• The highest temperature ever recorded in New Zealand is 42.4 °C (108.3 °F), recorded in both Rangiora and Marlborough on February 7, 1973.
  
• The lowest temperature ever recorded in Africa is −24 °C (−11 °F), recorded in Ifrane, Morocco on February 11, 1935.