A team of researchers has rediscovered a frog species which has not been seen in more than 130 years. First described in 1902 ...
A frog species thought to be missing for well over a century has been spotted again, according to an international team of ...
Henry Ernest Dudeney posed the famous dissection problem of transforming a triangle into a square by cutting it into as few pieces as possible. In a new study, researchers have finally proved that the ...
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