How can something appear to roll uphill?
The quest is on to find out how something can appear to roll up a hill, rather than down. Plus, we ask if the moon appears the same to viewers on either side of the planet.
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When I was on holiday in Barbados there was a road that seemed to defy the laws of gravity. If you placed a football at the end of the road which was quite steep downhill, the ball moved up the hill. I thought it was some kind of optical illusion at first but tried it myself and ...