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Political tides

Politician Douglas Carswell has been arguing with scientists about what causes the tides. We've figured out who's right.
Five of Euler's best

Five favourite problems inspired by Leonhard Euler, one of the greatest mathematicians of all time.
Stuff happens: From finance to fundamental physics

Current physical theories suggest that beautiful symmetries underly the fundamental particles and forces of nature. We describe those symmetries using an analogy from economics, and even rediscover the famous Higgs boson.
There may be more than one of you

The possibility that there might be many parallel worlds has just become a little more likely.
Counting the trees of life

How many possible genetic relationships are there between a collection of different species? The answer is mind-bogglingly large.