Saturday 29 April 2017 15.51 BST
Last modified on Saturday 29 April 2017 21.52 BST
Most of us have wondered about the human context of past crimes against humanity: why didn’t more people intervene? How could so many pretend not to know? To be sure, crimes against humanity are not always easy to identify while they unfold.
We need some time to reflect and to analyze, even when our reasoning suggests that large scale human suffering and death are likely imminent. The principled condemnation of large scale atrocity is, too often, a luxury of hindsight.
I’m a climate alarmist because there is no morally responsible way to downplay the dangers that negligent policies – expected to accelerate human-caused climate change – pose to humankind.
There can be no greater crime against humanity than the foreseeable, and methodical, destruction of conditions that make human life possible – hindsight isn’t necessary.
Scientists confirm, in overwhelming consensus, the fundamental facts that make anthropogenic global warming a clear and present threat to humanity and other species.
There is no amount of ideological deception capable of altering basic physics, chemistry and biology. It is ethically untenable for intelligent people to look the other way while elected officials deny reality, and our opportunity to avoid catastrophe slips away.
We know that the continued acceleration of climate change will bring more droughts, rising seas, more extreme weather, longer forest fire seasons and destructive storm surges. This in turn would lead to more water stress, crop failures, poverty, starvation, warfare and ever worsening refugee crises.
We know that the warming already achieved is expected to displace millions of people in low lying regions. Indeed, at our current rate of warming segments of the Middle East, Africa, and South Asia, will likely become uninhabitable for future generations