We’ve passed +1.5°C above pre-industrial temperatures. +2.4°C is now unstoppable. Recent projections show we’re on track to reach +3.0°C by 2050, at which time billions will die by mass migration due to unlivable heat, agriculture collapse, social upheaval, and war.

Help us tell the Truth. Join 4BD today!

There Are No Words

Time – Meet at 11:30am  
Start Location – Russell Square park – Go To Map
Start time – 12:00pm
Nearest tube stop – Russell Square (Piccadilly line)
End Location – Parliament Square – Silent vigil to be held in Parliament Square from 1pm – 2pm.

Join us for a post action debrief with food and small group discussion.
Come along to our Open Call on 8th April from 19:00 – 21:00 to find out why 4BD is taking to the streets on April 18th 

Upcoming Events & Workshops

Why 4 Billion People Are Going to Die-Thursday, April 2 at 7:00 pm UK

This event introduces the core ideas behind the 4 Billion Dead project and the science behind the risk it highlights. Drawing on research such as the Planetary Solvency Report, we’ll explore what current climate trajectories could mean for humanity, why the risks are widely underestimated, and why making them visible now matters. The session is open to anyone who wants to understand the argument and discuss what can be done next.

4 Billion Dead Procession- There Are No Words: Open Call. Wednesday April 8 at 7pm UK

Come along to our Open Call on 8th April from 19:00 – 21:00 to find out why 4BD is taking to the streets on April 18th (more information below)

According to the Planetary Solvency Report by the Institute of Actuaries, 4 Billion deaths is now a distinct possibility this century due to climate breakdown. There are no words to describe this. So we will not try.
On the 18th April, 4 Billion Dead will be on the streets of London, walking in slow, silent procession. We will bear witness to this injustice. That is it.
Please bring along a placard with the words ‘4 Billion Dead’ written on it. What shape the placard is, and what it represents is up to you. This is an action to connect us with our inner morality and spread the word of this unspeakable truth. You may want to attach your placard to a personal artefact. It may be a symbol of hope, of courage, of spirituality, of unity between people. That choice is personal and is yours to make – 4 Billion Dead is not connected to any particular religious or spiritual group. We are simply human. We care. We will bear witness to this truth.

See a summary of the scientific rationale behind the 4 Billion Dead Project here – The 4 Billion Dead Project – A Rationale & Summary

Who are 4 Billion Dead?-Thursday 9th April at 7pm

Roger Hallam & The 4 Billion Dead project are embarking on a citizen-led, spiritual journey to inform the public of the grave impacts of climate breakdown and protect life on earth.

But what is 4 Billion Dead actually doing? How is it going to flood the zone with the truth?

Join on Thursday 2nd April at 7pm as key players from within the 4BD project spell out exactly what we aim to achieve, how we are going about it and how every person can be part of this critical work.

Thu, Apr 9, 2026, 7:00 pm - 8:00 pmWho are 4 Billion Dead?zoom.usRegister
Sun, Apr 12, 2026, 4:00 pm - 5:30 pmSunday Servicezoom.usRegister
Fri, Apr 17, 2026, 2:00 pm - 4:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Tue, Apr 28, 2026, 7:00 pm - 9:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Sun, May 10, 2026, 4:00 pm - 5:30 pmSunday Servicezoom.usRegister
Tue, May 12, 2026, 7:00 pm - 9:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Fri, May 22, 2026, 3:00 pm - 5:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Fri, Jun 12, 2026, 3:00 pm - 5:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Sun, Jun 14, 2026, 4:00 pm - 5:30 pmSunday Servicezoom.usRegister
Tue, Jun 23, 2026, 7:00 pm - 9:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Fri, Jul 3, 2026, 3:00 pm - 5:00 pmIntroduction to Rev21's Vision, Philosophy and Culture workshopzoom.usRegister
Scroll to Top

Stay In The Loop