There is hardly any future for many species and for human civilization under mean global temperatures of more than 2 degrees Celsius, let alone under more than 4 degrees Celsius, which is where we are heading…  – Andrew Glikson Geoff Holland – You have written that the scale and rate of greenhouse warming have been … Continue reading Are we already beyond climate tipping points? – A MAHB Dialogue with Paleo-Climatologist Andrew Glikson