great game, but i am stuck and feeling like something is broken. i am trying to get the last level and the mission to get 32 elements between 1901-2000 appears to be bugged. i have gone through every element, looked it up online on wiki and there are only 30 elements discovered between 1901-2000 (29 on another part of the page). i am getting alot of mixed info here but regardless i have gone through the entire knowledge section and counted every single one and can only find 31 here. please help.