Spiegel: Is climate change beyond our control? Respected geo-researchers have presented a new prognosis for the global increase in temperature. Yesterday’s worst-case scenario is becoming today’s reality. Two degrees — that value has long been the guideline for international climate policy. Were the increase in average global temperatures held below 2 degrees Celsius (3.6 degrees Fahrenheit), then drastic climate change and long-term irreversible damage — like the melting of Greenland’s …