On a clear night you can see thousands of stars in the night sky, and there are billions more in our galaxy alone. But are the official star names really up for sale?
Proof of time travel, false memories or a parallel universe? A look at the wacky world of the 'Mandela Effect'.
If it came down to buying a trip or a keepsake, which should you choose?
Could the not-too-distant future hold "brain chip" technologies that we could all use to enhance our memories to the point of perfection? Not so fast: there are big benefits to forgetting.
Lots of kids have trouble remembering their times tables. Learning them by rote can mean a child knows the numbers but not what they mean.