Carbon calculations for a bond portfolio

Go back

For half of the Earth’s existence, there was virtually no oxygen. Then two billion years ago, just one type of bacteria – cyanobacteria (or blue-green algae) – stumbled upon photosynthesis of which oxygen is a bi-product. This was a true evolutionary one-off: no other lifeform, before or since, has pulled off the same trick. Indeed, trees and plants rely on cyanobacteria for photosynthesis1 and it’s the reason trees are green.

To read this article, you need a subscription to Investment Officer. If you don't have a subscription yet, click on 'Subscribe' to see the various subscription options.