I once read that the opposite of depression is not joy, it’s expression. It immediately made me think of a doughnut. Stay ...

But out in the universe, are there any planets that aren ... Some scientists have posed the possibility of a toroidal — or doughnut-shaped — planet. This could hypothetically happen if a ...

[PDF via NewAtlas] Inspired by some of the experiments with “ring wings” in the early 20th Century, researchers iterated on various toroidal propeller geometries until arriving at one that ...