The pivotal scene in the movie The Wizard of Oz comes when Dorothy Gale's dog Toto pulls back a green curtain behind the fire-belching "Wizard", to reveal a "humbug" patent medicine salesman.  A similar situation exists in the world of green building,  LEED consultant Dan Sammartano, LEED AP, general manager, Salian Commercial Construction Services, told the attendees at the Green Buildings & New Technology Conference held in Clayton on Thursday, Nov. 11.