Number enthusiasts may be looking to the new year with a touch of melancholy. Another perfect square like 2025 (45 2 = 2,025) won’t occur again until 2116 (46 2 = 2,116). The year 2027 will be a prime ...

How many healthy years do I have left? It's a confronting question – made more urgent by official figures showing soaring obesity rates and a sharp rise in long–term illness across Britain. Nearly two ...