S5, E13: The power of steam was known already at the time of Hero of Alexandria, but people didn’t know how to use it properly back then. Only in the 17th century, a certain Denis Papin would solve this problem. Thanks to him we have the so-called vapor pressure cooking pot. Other scientists, too, engaged in the phenomenon of steam over and over again. First there was Newcomen, and then later James Watt, but it was the scientist Stephenson who built his steam engine “Killingworth” on wheels. This was the birth of the locomotive…