Why a Harvard scientist is pretty confident chemtrails don’t exist

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Apr 24, 2018 #banff, #Canadian Broadcasting Corportation (TV network), #Canadian News, #CBC broadcasting media, #CBC News, #CBC News Network, #CBCNews, #chemtrails, #david keith, #harvard, #hav, #News, #public broadcasting

A billboard in Banff, Alta. promotes a conspiracy theory about governments secretly spraying chemicals from the sky to sterilize people. Climate scientists David Keith has received aggressive…

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