Simon Parkin reports on the encrypted messaging service used by criminals around the world
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Last weekend’s auction proved ‘strangely underwhelming’
The 80-1 shot upset the bookies with a stunning run at the Prix de l’Arc de Triomphe
Luis von Ahn, chief executive of language-learning app Duolingo, talks about taking on TikTok with a maths...
And other stories from the stranger side of life
