IF you still don’t think that global warming/climate change is the most serious threat to the future of the planet, then this A-Z companion should finally convince you.

Dip in where you will, whether it be Arctic sea-ice, carbon taxes, urban trends, tourism or rainforests, the facts are presented, clearly, methodically and unemotionally, and the message is unmistakable.

We must all do something, and do it soon, or we are doomed along with creatures such as the polar bear, whose extinction date is set at 2060.

Recent research suggests that we may be on the verge of a breakthrough with fusion powers which would be cheap, environmentally friendly and practically limitless. But given human nature, we will probably make a mess of that as well.