Bill Nye The Science Guy on Heat -- Heat flows. It's the energy of moving molecules. Heat makes things go; it can make things burn. From snow to ice floe, things may look cold, but they've got heat. Conduction, radiation, convection, natural & forced that's how heat gets around.
How To Turn $6 And About 3 Hours Of Your Time Into A Solar Heat Box That Could Heat Your Entire Home For Free. http://www.thegoodsurvivalist.com/i-never-thought-with-6-and-about-3-hours-of-time-a-person-could-make-a-solar-heat-box-that-could-heat-their-entire-home-for-free-i-was-wrong-heres-how-to-do-it/