No evidence? The extreme global average temperatures haven't happened in the entire history of human civilization, so the kind of evidence you might be expecti

No evidence? The extreme global average temperatures haven't happened in the entire history of human civilization, so the kind of evidence you might be expecting is tough to come by. But there are dozens of papers suggesting what might happen using trend projection and knowledge of agricultural and sociopolitical constraints, if you care to look. There is also the fact that heat related deaths are already in the hundreds of thousands per year and the trend is upward. The fact that someone finds it unreasonable to think that an extreme climate would cause extreme mortality is ... interesting.