The slightly shabby but loveable Mr Micawber also had a point when it comes to our income and expenditure in relation to our planet.
We currently use the resources of 1.7 planets, which absolutely will lead to misery the likes of which our species has never known. We have to lower that number below our income - one planet. That we act like the planet is 1.7 bigger than it actually is (and that’s before the population increases by 1.2 billion over the next decade) is pretty much the definition of unsustainable.
The pre-industrial baseline - or pre-coal. They burnt it in China 4,000 years ago, and the Romans loved it, but it wasn’t until James Watt and his steam engine that our love affair with coal really heated up.
Reached by 2017. After 1880 the world started to get toastier. In 1950 that heat curve started to get a wee bit steep; by 2017 we were a degree hotter
The rise we think we can take, and achieve, agreed in Paris; but the window is closing. And 1.5 degrees still means unpredictable weather and damaged livelihoods. Likely to hit by 2040.
The absolute limit - and the Paris Agreement buffer target.
The last time the world was this hot was c. 4 million years ago; sea levels were 10 meters higher.
The point at which our economies become ‘uninsurable’ (according to Aon).
How hot it could get if we fail to act. Well into mass extinction territory.