Many people don’t realise that the threat posed by climate change is much more than some gradual increase in temperature and disruptive changes in weather patterns. Climate scientists now recognises a new class of threat that is beyond dangerous, more than catastrophic and is in fact ‘existential’.

That is a threat that could annihilate most people on earth. This threat could be realised within the lifetime of a child born today if we do not take immediate emergency-based action to cease carbon emissions and draw down atmospheric carbon stocks to keep global warming below 2 degrees. The IPCC assessment is that we have 12 years at most to achieve this turn around.