Cryptic crossword #62: One way of delivering to scenic rocks (1-7)
22 July 2021
Challenge your brain by solving New Scientist's weekly crosswords on your mobile, tablet or desktop
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This week’s new questions
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When animals show their teeth it usually signals aggression, so when did humans start doing it to show mirth or friendship? And how does water become "stale"?
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Bacteria ferment the milk sugar lactose to lactic acid, which sours milk and coagulates milk proteins. What do bacteria ferment in lactose-free milk?
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Insect bites are often itchy, prompting many of us to scratch. Our readers examine whether this might confer any survival advantage to the bugs
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Our readers explore what might happen to Earth if the sun vanished, from dramatic shifts in gravity to the complete loss of light for photosynthesis
