The optical illusion today is designed to find out the number 53, hiding in the group of 23 and 21. Only the sharpest and those with a clear vision, which is just 1 per cent of viewers, can spot it ...

First, they learn that the vast majority of the 84 billion birds and mammals raised for food are kept on factory farms, where animals are routinely mutilated and intensively confi ...

These road trip stops between San Diego and San Francisco offer you history, photo ops and, yes, a bathroom break.