OSLO – The winner of this year's Nobel Peace Prize will be announced Friday at 11 a.m. (0900 GMT) in Oslo, with no shortage of causes or candidates on this year's list.While the Norwegian Nobel Committee maintains absolute secrecy about whom it favors for arguably the world’s most prestigious prize, that has never stopped speculation ahead of the announcement.Guesses — and bets — this year have focused on Swedish climate activist Greta Thunberg, Russian dissident Alexei Navalny, recovering from a nerve agent attack he blames on Russian President Vladimir Putin, and the World Health Organization for its role in addressing the coronavirus pandemic.Even U.S.