The Queen's only daughter Anne married show-jumper and army officer Mark Phillips in 1973.
Thousands of spectators lined the streets to watch the grand procession in London on 14 November, but the marriage wasn't to last.
The couple divorced in 1992 and the Princess Royal remarried six months later, this time in a quiet ceremony to Commander Timothy Laurence.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
Confused Apple customers are finding coins in their MacBooks.
High levels of iron help prevent hearing loss, a study has claimed.
A software engineer has constructed a fingernail-sized engine made of paper and it totally works!
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