American journalist Mark Hertsgaard understands what lies ahead for humanity as climate change unfolds, some of it already unavoidable though hopefully manageable, but with outright chaos lurking if we fail to rein in emissions. He harbours no illusions. The fact that his little daughter will be part of the generation living through the coming turmoil gives an extra edge to his writing in his new book Hot: Living Through the Next Fifty Years on Earth. The battle to prevent dangerous climate change is over; the race to survive it has begun. That’s how he sums up where we are now.