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ostly comes from one man. |
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The Super-K observatory uses an underground tank containing 50,000 tonnes of very pure water (here drained for maintenance) to detect neutrinos. (Takumi Harada/Yomiuri Shimbun via AP/Alamy) |
Hints of supernova particles spotted |
Dentist Martin Nweeia has a side passion for one of the weirdest teeth on the planet—the narwhal tusk. |
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