Vital for healthy bones and teeth.
Great food sources include fatty red meat, oily fish, eggs and margarine.
No RDA is set as most of our intake comes from sunlight.
A daily intake of between 25mg and 50mg may increase the risk of kidney stones.
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!
Conspiracy theorists claim that there is a mysterious alien based pyramid in the Antarctic.
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