Senate Democrats @SenateDems
4. Rising CO2 levels could cause clouds that help to cool Earth to vanish, amplifying the effects of global warming. https://t.co/92y0WlRrcu — PolitiTweet.org
Joel Achenbach @JoelAchenbach
In case you were thinking it would be good to hit 1,300 ppm CO2 https://t.co/2VUxALuKgT