Because there are no angles for alignment, the round shape makes these heavy covers easier to put back on once they're taken off. ...

Aryabhata ( 476 BC ) Birthplace: Bihar,India Aryabhata  was one of the first  Indian mathematicians  and astronomers belonging to the c...

When you and I calculate two plus two, we imagine a number line, start at two and hop over a couple of spots to get to four (or at least w...