The climate crisis is wreaking havoc across the globe, raising sea levels, disrupting ancient weather patterns and decimating biodiversity worldwide. But new research shows that the warming climate is not just affecting the planet's physical systems - it is affecting us all individually too. In 'The Weight of Nature', the neuroscientist and journalist Clayton Page Aldern examines, the seismic consequences of climate change on the human mind, brain, and body. The now-familiar concept of climate anxiety, he shows us, is just the tip of the iceberg: a revolution is taking place in the deepest recesses of our neurochemistry. The rapidly changing environment is directly intervening in our brain health, behaviour, cognition and decision-making in real time, affecting everything from aggravated assault and online hate speech to productivity and the global dementia epidemic.