UNDP contribution
My son recently asked me whether he had saved much CO2 from being emitted into the air by using the Little Sun solar lamp I designed. He also wanted to know why, if a tonne of CO2 weighs so much, it does not drop to the ground. And where is it? To him, a tonne is heavy and physical and not an intangible mass distributed in the atmosphere. His questions made me realise how little I myself know about CO2.
When I was my son’s age, back in the late seventies, there was no discussion of climate change. Nature was where I spent my summers, in a tent in the Icelandic highlands, a stark contrast to the Copenhagen I lived in. These natural and manmade realms could not be more separate. But today, there is no nature outside of
human activity. Our survival and future depend on understanding the effects of CO2 consumption and acting on that understanding.
But what do we understand? What, for instance, is a tonne of CO2? Is it hot or cold, wet or dry? Perhaps it would help to know that one tonne of CO2 could be imagined as a cube the size of a three-storey house, or that, when frozen, it would form a block of dry ice about 0.67 cubic meters in size. But what does that actually tell me if I do not know how much CO2 I produce in a year or on an average day? What does it tell me if I do not sense my interrelationship with planet Earth?
Olafur Eliasson, excerpt of contribution to UNDP's Human Development Report 2016