Of the 170,000 people who go missing in the UK each year, some cases remain etched in our minds, while others fade too quickly from public attention, if they were ever known at all.

Although they look similar on this map, the road and the river are examples of the two different types of geography: physical and human. Amber: That sounds complicated! Mr Lewis: Not really.

Recent objective evidence from England and the USA suggests that low physical activity is the most prevalent chronic disease risk factor, with 95% of the adult population not meeting the modest ...