Tiny shoes and empty juice boxes with faded Turkish labels can still be found on the northern coast. So can black doughnut-shaped inner tubes, given by smugglers as crude life preservers for children.

Looking to inspire the next generation of curious minds? These are our picks of the best popular science books for children ...

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, PR China ...