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.