On April 20, 1951, Romanian surgeon Dan Gavriliu performed the first ever esophagus replacement on humans and went on to do another 1,000. On the same day in 1902, Pierre and Marie Curie discovered the radioactive element radium. More recently, April 20 has become known as the  ‘420’ day, the rallying cry of those who … Continuă lectura Cannabis companies’ value goes up in smoke