evidence: Zeke Hausfather 10.05.17Zeke Hausfather 05.10.2017 | 5:00pmScientists have been making projections of future global warming using climate models of increasing complexity for the past four decades. [...] Models are far from perfect and will continue to be improved over time. They also show a fairly large range of future warming that cannot easily be narrowed using just the changes in climate that we have observed.