Dan Miller's presentation focuses on why the UN IPCC (Intergovernmental Panel on Climate Change) reports are actually best case scenarios. For example, IPCC climate models do not include the effect of melting permafrost releasing greenhouse gases, even though the permafrost is melting now and it holds more greenhouse gases than all that mankind has ever released.
Another example is that IPCC predictions of sea level rise only take into account thermal expansion of the oceans and melting of glaciers; the largest factor, disintegration of glaciers, was not included because it is hard to model. The result is that sea level rise will likely be substantially higher this century than the IPCC predicts.
Miller discusses several other potential catastrophes that are not included in IPCC predictions and also discusses tipping points that could put climate change solutions out of our reach in years or decades, the psychology of climate change, and why it is difficult for people to respond to the threat posed by a warming earth.
His talk concludes with a discussion of ways to address climate change and the risks and opportunities that companies face due to the climate crisis.
