In 2006 in ‘the revenge of gaia’ Lovelock writes that if the world’s annual 27 Giga tonnes (Gt) of CO2 emissions were stored as frozen CO2 at – 80°C it would form a mountain one mile high and twelve miles in circumference. Lovelock uses this as an example of the difficulties of carbon capture and storage as a solution to climate change.
In 2008 the annual CO2 emissions were 32 Gt of CO2 (8.7 Gt of Carbon). Pretty much all of the 8.7 Gt of carbon were emitted through fossil-fuel burning and cement manufacture – the two biggest CO2 outputting processes.
One proven process of carbon capture is photosynthesis. If captured carbon were stored as timber how large would the pile be? If air-dried timber – the kind you buy at a DIY store – at 12% moisture is taken as having a density of 568 kg m3 and a carbon content of 44% (based on 50% dry weight, 1m3 of timber will contain 0.25 tonnes of carbon.
Using the timber formula above that would mean 17.4 billion tonnes or 34.8 billion m3 of air-dried timber would need to be sustainably harvested and permanently stored to sequester 8.7 Gt of carbon.
To put this into context consider the Great Pyramid of Giza. This structure was originally 0.1466 km tall on a square base of side length 0.2304 km. If it were a solid mass, the volume would be 0.0026 km3.

The Great Pyramid of Giza to the left of the Empire State Building. A solid wood pyramid capturing Carbon from annual fossil fuels and cement industry behind.
To store the 8.7 Gt of carbon emitted into the atmosphere every year as air-dried timber would require a pyramid with 13,415 times the volume of the Great Pyramid of Giza. Constructed of solid wood this pyramid would have a base length of 5.47 km, and a height of 3.48 km. This pyramid would cover 30km2, and stand 7.86 times the height of the Empire State Building.
To sequester the annual 27 Gt of CO2, the wooden pyramid would need to be 3 times the volume again!
Back to 350ppm

Answer - far left: the Carbon needed to get down to 350ppm. Left of Mount Everest: Emissions since industrialisation that have remained in the atmosphere. Right of Everest: Emissions since industrialisation.
So how large would the wooden pyramid need to be to get the amount of CO2 in the atmosphere down to 350ppm?
350ppm – the figure many scientists, climate experts, and progressive national governments are saying is the safe upper limit for CO2 in our atmosphere – 350.org.
(Many thanks to Google Earth, the wonderful sketchup community and the talented Green Frontier team for the graphics).
Competition – next steps
Many thanks to all our fabulous eco-affluent photographers!
Winners of the eco-affluent next steps competition are …
Winner of the main prize: Karl D from Suffolk with his photos, Breakfast, Plan Bee – facebook like and Smiling away from the camera. But most impressively Karl’s next step towards eco-affluence will be to “understand the principle further and look to apply it locally by creating more meaningful “Twin Towns” at the community level.” Go Karl! Keep us updated!
Runners up are: John L from Essex and Bart R from London.
The winning pics and a selection of our faves are below. Thank you and well done everyone that entered, we hope you had fun being eco-affluent
Breakfast
Plan Bee - Facebook Like
Smiling away from the camera
Walking in the rain
Veggie something
I WANT ONE OF THOSE
not organic = stays on the shelf
from the allotment
Dandelions4Bees
The competition …
Start taking eco-affluent steps now and you’ll be in with a chance of winning a bag load of eco-goodies!
WARNING: This competition challenges you to increase your real wealth …
The prizes
1st prize: RAPANUI Panda t-shirt, 1 years subscription to PERMACULTURE magazine, Woodpecker (shake) torch, Powermeter, fridge thermometer, wildflower seeds, signed copy of The Book of Rubbish Ideas, Do Good Lives have to Cost the Earth book and more!
2 runners up: RAPANUI t-shirt, 1 years subscription to PERMACULTURE magazine, fridge thermometer, and a couple more bits and pieces.
The challenge
hint: eating from one of those big fast-food chains really isn’t trying and is definitely not an eco-affluent act!
hint: visit the Co-operative’s Plan Bee site or ask a lovely bee-keeper
hint: we really want to see those smiles!
How to enter
My next step towards eco-affluence will be to ………………(plus 25 words max)
Competition deadline
Entries must be received by 12 noon on Saturday the 11th of June and will be judged on smiley creativeness.
Many thanks to RAPANUI, PERMACULTURE magazine, Tracey Smith and the Good Energy Shop for the prizes
Terms and conditions
Have fun!