Author J K Rowling wrote the final chapter of the last Harry Potter book in "something like 1990", seven years before the release of the first book.
7
If two pieces of metal touch in space, they become permanently stuck together.
807
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
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