Peter Kalmus is a climate scientist at Nasa’s Jet Propulsion Lab. He is the author of Being the Change: Live Well and Spark a Climate Revolution
"We have zero years before climate and ecological breakdown, because it’s already here. We have zero years left to procrastinate. The longer we wait to act, the worse the floods, fires, droughts, famines and heatwaves will get... If we fail, the planet will continue to heat up, creeping past 1.5C, then 2C, then 3C of global heating as we keep squandering precious time. With every fraction of a degree, the floods and fires and heat will get worse. Coastal cities will be abandoned. Ocean currents will shift. Crops will fail. Ecosystems will collapse. Hundreds of millions will flee regions with humid heat too high for the human body. Geopolitics will break down. No place will be safe..."
Jennifer Francis is senior scientist at the Woodwell Climate Research Center
"If we do not succeed in changing our destructive behavior, the increasing trends in extreme weather, sea levels, government destabilization and human misery will continue and worsen. Extreme heatwaves, drought, wildfires and flooding events like those we’ve seen in recent summers will become commonplace. Many coastal cities and communities around the globe will be increasingly inundated by high tides and storm surges. Longer, more intense droughts will destroy cropland and force agricultural communities to uproot their families in search of a better life. The devastation of coral reefs around the world will worsen, wiping out fisheries that provide staple protein for millions of people. All of these impacts are happening now."
Michael E Mann is distinguished professor of atmospheric science and director of the Earth System Science Center at Penn State University. He is author of the recent book, The New Climate War: The Fight to Take Back our Planet
"How many years do we have to act? Strictly speaking, zero – which is to say, that we must act, in earnest, now. We have a decade within which we must halve global carbon emissions...We must now choose between two paths as we face our future. One leads to massive suffering and collapse of our civilizational infrastructure. The other leads to a prosperous future for us, our children and grandchildren. But it requires that we leave fossil fuels behind. The choice is ours."
Holly Jean Buck is a postdoctoral research fellow at UCLA’s Institute of the Environment and Sustainability. She is the author of After Geoengineering: Climate Tragedy, Repair, and Restoration
"...If we don’t succeed in transitioning away from fossil fuels globally, we could face an uneven world where a few rich countries congratulate themselves for going green, and a few oil producer nations are supplying the rest of the world with dirty fuel, which they use because they don’t have alternatives..."
All these experts overlook one important point. Our economic system must be changed to sustainable socialism. What do we do when the scientific community cannot see the solution?