Tears at bedtime: are children's books on environment causing climate anxiety?

Greta Thunberg effect behind sales boom in books on everything from plastic waste to endangered wildlife

I'm reading one of a small forest's-worth of beautiful new picture books about the environment with my eight-year-old twins. The Sea, by Miranda Krestovnikoff and Jill Calder, takes us into mangrove swamps and kelp forests and coral reefs. We learn about goblin sharks and vampire squids and a poisonous creature called a nudibranch. Then we reach the final chapter on ocean plastics. When we learn that by 2050 there could be more plastic in the ocean than fish, Esme bursts into inconsolable tears.