The looming catastrophe of climate change is not only about the increasing frequency of natural disasters that we already see causing hardship and economic stress to communities. The worst catastrophe is not even the horror that will befall more and more people over the coming decades as their food, homes, livelihoods, and security are eliminated by these disasters and the uncertainties that follow in their wake. Most of us are unaware that there are already millions of people displaced by climatic factors—droughts, storms, floods, desertification, sea-level rise, heat, and fire—across the world. Within the next decade already, the UN estimates that there will be tens of millions of climate refugees looking for food, shelter, and safety. This will affect geopolitics, as we’ve already seen. This will spawn untold scenes of humanitarian disaster as famine, disease, and violence propagate. But perhaps 20 or 30 or even 50 million refugees are something the world can deal with, a hardship from which our systems can eventually bounce back.

 

However, if we do not shift our present course and take RADICAL action to eliminate fossil fuels and restructure our ways of life on this planet as quickly as humanly possible, we are looking at a future where more than a billion refugees are expected to accrue over the coming decades. It’s difficult to see how such a situation would NOT spell the collapse of modern human civilization. This is the ultimate catastrophe climate scientists are urging us to act to avoid.

 

To avoid this catastrophe, we must prepare ourselves to reimagine how we live upon this planet—our energy systems, our food systems, our urban infrastructures, our politics, and everything in between. People are understandably resistant to this idea. It requires a commitment to chart an unknown path for humanity, fraught with uncertainty, and to do it collectively with people from all walks of life, even those we may consider our enemies. But if we do NOT accept this and do not do our best to adjust ourselves and our civilizations to mitigate the worst ravages of climate change—still yet to come—we will face not only the sincerely difficult task of demanding the best of ourselves, not only the genuine risks of exploring unfamiliar ideas and directions for innovation, but also the near certainty of total collapse, much sooner than most of us are willing to imagine: we will feel the shift in our own lifetimes; our children will struggle in a rapidly devolving world as they reach middle age; our grandchildren will bear the brunt of this catastrophic failure. This is if we continue on our present course of denial and inaction.

What can you do? If you live in even a moderately functioning democracy, the most important thing you can do is to put your efforts toward empowering leaders who will suitably address the emergency, enact policies that begin the needed transitions of our infrastructures and business practices, and hold the responsible bodies accountable for positive change. In other words: VOTE for climate-conscious candidates. Learn what you can. Teach what you can. Make noise.

The latest IPCC report that was released this past week was about the feedback between land use and climate change. It recommends sweeping changes to our current land use patterns, without which we will not meet the goal of limiting global warming to 1.5ºC above the pre-industrial baseline temperature. Implicit in this are changes to what we grow, where we grow it, how we grow it, and therefore, what we eat. One fundamental recommendation is to eat less meat, especially beef. Even if you aren’t a person who’s concerned about the systematic torture of animals, climate change concerns alone should be an incentive to minimize your consumption of meat. Another major concern is food waste—an absolutely easily avoidable practice by those who live in developed countries!