For people that are lost on how climate change could be positive: it causes higher crop yields, and increases the temperature in cold regions (saving people from freezing to death and saving huge amounts of energy in heating).

Economists have performed many analyses on these and the conclusions indicate the consequences of climate change are much more mild that what the media, NGOs and politicians propagate. It's revolting that institutions have kept this scientific analysis away from the general population and have been feeding us political hysteria instead. The fact that even educated, rational, successful engineers in Hacker News are not aware of these data is another argument for why Twitter shouldn't be censoring ads in this political way.