Every year we hear of forest fires that engulf cities, endanger human lives, and cause the mass destruction of property. These fires rage uncontrolled, so large that they cannot be put out, turning the skies red and charring everything in their paths. Forestry and fire services take many precautions to

A polar bear in freezing temperatures, Credit: Alan Wilson Have you ever poured sweat on a hot day? Or shivered in the cold? This is because of your body’s ability to control its own internal temperature, which is called endothermy. Table of Contents What are Endothermy and Ectothermy? Birds and