What is this book?

Written by Dr Emily Grossman with the support of the XR Scientists community. Fact-checked and reviewed by a wide range of experts in relevant fields - both from within the XR Scientists community and external to it. This guide is also available on the Extinction Rebellion UK website. Downloadable here. Last updated 1st September 2020


The science is clear

We are facing an unprecedented global emergency

We must act now.


“We are in a planetary emergency.” Professor James Hansen, Former Director NASA Goddard Institute for Space Studies

“Based on sober scientific analysis, we are deeply within a climate emergency state but people are not aware of it.” Professor Hans Schellnhuber, Founding Director of the Potsdam Institute for Climate Impact Research

“There is sufficient evidence to draw the most fundamental of conclusions: now is the time to declare a state of planetary emergency. The point is not to admit defeat, but to match the risk with the necessary action to protect the global commons for our own future.” Professor Johan Rockstrom, Director of the Potsdam Institute for Climate Impact Research

“This is an emergency and for emergency situations we need emergency action.” Ban Ki-Moon, Former UN Secretary-General

"The climate emergency is our third world war. Our lives and civilization as we know it are at stake, just as they were in the Second World War." Professor Joseph Stiglitz, Economist, recipient of the Nobel Memorial Prize in Economic Sciences

“Climate change will lead to battles for food.” Jim Yong Kim, Former President of The World Bank

“Climate change is the greatest security threat of the 21st century,” Maj Gen Munir Muniruzzaman (Retd.), chairman of the Global Military Advisory Council on Climate Change

“You have to understand, this is also a crisis for the world. The fact is that if the poor are suffering today, then the rich will also suffer tomorrow.” Dr Sunita Narain, Director General of the Centre for Science and Environment

“Climate change is moving faster than we are - and its speed has provoked a sonic boom SOS across our world. We face a direct existential threat.” António Guterres, United Nations Secretary-General

"We have all the resources we need to deal with this. There is nothing magical about reducing carbon dioxide in the atmosphere. We just don’t have the political or economic will to do this.” Professor Stephan Harrison, Professor of Climate and Environmental Change, University of Exeter

“Listen to the cry of the earth and the cry of the poor, who suffer the most. The urgent need for interventions can no longer be postponed.” Pope Francis

“The future of the human race is now at stake.” Rowan Williams, Former Archbishop of Canterbury