Commercial flights were allowed to fly any course to their destination and would often detour over points of interest. This ended in 1956 when two planes crashed mid-flight over the Grand Canyon.
Bill Murray and Dan Aykroyd dusted off their Ghostbusters costumes to visit a terminally ill child who was a fan of the film and wanted to meet them.
The loudest animal on earth is the sperm whale.
The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.