What will happen if climate change is not addressed.

Severe climate change is already happening. The pre-industrial global mean surface temperature was .2°C. Currently it is 1.1°C. The ice sheets in Greenland and Antarctica are melting at an unprecedented rate. Half of the Great Barrier Reef has died while record-breaking wildfires have destroyed forests in America, Australia and The Taiga.

If nothing is done to stop climate change it’s predicted to rise to 2°C by between 2030 and 2040.

The climate could change to a new state if a series of cyclic events are triggered; this is known as a tipping point. One example of this is the Arctic, where permafrost, earth that has been kept below zero °C, is thawing. Its dark surface absorbs heat and releases methane which then further adds to planetary warming.

Temperatures of above 4°C are likely to cause more tipping points and some that trigger other tipping points which could further raise temperatures to 6 or even 8°C. Anything above 5°C...