Climate activist Greta Thunberg to world leaders at #UNGA summit: "People are dying, entire ecosystems are collapsing. We are at the beginning of a mass extinction and all you can talk about is money and fairytales of eternal economic growth. How dare you" https://t.co/41fNCPnFdU pic.twitter.com/1GRuoyHNvw— This Week (@ThisWeekABC) September 23, 2019