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Pro-doping Enhanced Games to debut in Las Vegas with Trump Jr backing
The latest twist in a Canadian medical mystery – podcast
Mexico: ‘Noah’s Ark’ of animals leaves cartel violence for new home on coast
Fires drove record loss of world’s forests last year, ‘frightening’ data shows
Sing when you’re winning: how karaoke in cars heralds the triumph of Chinese firms
The solutions to today’s problems
Earlier today I set these two puzzles, which were given to me by a computer scientist at Microsoft. They are an analogy for how companies protect data centres from the random failures of hard drives. Here they are again with solutions and workings.
The disappearing boxes
Notifications
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