Professor John Joachim Schellnhuber, Climate Adviser to the Pope dials up the alarm, not to 11, but to TWELVE.
“Planet could warm by 12 degrees, I have all the evidence” “Scientists have to take to the streets to counter denial”
“If we want to hold the 1.5 degrees [Celsius; 3.6 degrees Fahrenheit] line, which is the ambitious goal of the Paris agreement, we have maybe 300 billion tons left – more or less the budget of 10 years – if we do business as usual. If we want to hold the 2 degrees line, which is more realistic, we have another 20 to 30 years to go, but no more actually. So it’s a very tight budget.
It’s quite mind-boggling – for example, by 2030, we have to phase out the combustion engine. And we have to completely phase out the use of coal for producing power. By 2040 we will probably have to replace concrete and steel for construction by wood, clay and stone.
We are at the crossroads now: We either say: this thing is too big for us, this task cannot be done. [Then] we will be transformed by nature, because we will end up with a planet warming by 4, 5, 6 or even 12 degrees. It would be the end of the world as we know it, and I have all the evidence.”