Alex Bellos's Adventures in NumberlandMathematicsCan you solve Martin Gardner’s best mathematical puzzles?The maestro of recreational maths was born 100 years ago today. Here we celebrate his birthday with eight of his most celebrated puzzles
Here’s something puzzling.
A few years before he died, aged 95 in 2010, I interviewed Martin Gardner at his home in Norman, Oklahoma.
Gardner was a journalist, a novelist, a magician, a philosopher and one of the earliest public debunkers of pseudoscience. Read More...
Ask HadleyKeira KnightleyThe actor posed topless on the condition that her breasts would not be photoshopped, in protest against artificially perfect images of women. Should we cheer her on?
Keira Knightley has protested against airbrushing by posing topless in a magazine. Is this really the best way to go about protesting?
Sara, by email
For those who have missed this enormous international story of grave importance, Keira Knightley agreed to pose topless for the US magazine Interview on the condition that her image would remain wholly unphotoshopped. Read More...
Sexual healingSexSome men take longer to climax than others. Ask him to tell you what he needs, advises Pamela Stephenson ConnollyI have been with my boyfriend for two months and we were both virgins when we had sex for the first time. I feel so sad because I can't get him to come. We do foreplay and I give him oral sex to get him in the mood. He says once he enters me it feels good but after a minute he doesn't feel anything any more. Read More...