Experienced mathematicians warn up-and-comers to stay away from the Collatz conjecture. It’s a siren song, they say: Fall under its trance and you may never do meaningful work again. The Collatz ...

The iridescent blue of butterfly wings has inspired researchers to find a solution to a challenge previously considered insurmountable - dynamically tuning advanced optical processes at visible ...

How can you tell if a person is smart? Do you judge them based on their level of education or the impressive vocabulary they use in conversation? Maybe you decide that someone’s intelligent after ...