William Happer je profesor fizike na univerzi Princeton in ne sodi med znanstvenike s področja podnebne znanosti. Happer je bil nekaj časa tudi svetovalec v Beli hiši za področje podnebnih sprememb.
V to rubriko sem ga uvrstil zaradi njuegovega izrecnega nasprotovanja popolnega soglasja znanosti odločilne vloge antropogenih emisij CO2 pri podnebnih spremembah.
Priporočam ogled intervjuja o politizaciji podnebne znanosti in predavanje zakaj CO2 ni onesnaževalo.
Zanimivo je prebrati tudi komentar na odziv American Association for the Advancement of Science of America izpod peresa Davida Middletona. Povezavo je razjezilo Happerjevo stališče “Given the huge benefits of more CO2 to agriculture, to forestry, and to primary photosynthetic productivity in general, more CO2 is almost certainly benefitting the world,” the authors wrote. “And radiative effects of CH4 [methane] and N2O [nitrous oxide], another greenhouse gas produced by human activities, are so small that they are irrelevant to climate.” Kategorično so zatrdili “The world’s leading science agencies have found that increased carbon dioxide emissions will reduce crop yields and crop health and increase heavy precipitation events that destroy vegetation, and that worsening droughts—as well as longer periods of more intense heat—will kill plants and threaten humanity.”