Locals and Redditors alike are baffled by a haul of 60 elaborately engraved silver metal cubes pulled from the River Sowe in Coventry in central England. A keen-eyed Redditor has identified them as ...

For decades, a math puzzle has stumped the smartest mathematicians in the world. x 3 +y 3 +z 3 =k, with k being all the numbers from one to 100, is a Diophantine equation that's sometimes known as ...