Originally, angels were heaven's poor relations who were lumbered with sorting out human affairs instead of looking after Eden or singing with the cherubs.
Some believe that a soul grows in steps from a mineral, to a plant, then an animal and then to a human. When the human dies, a soul can then decide to become an angel. Films like 'City of Angels' have popularised romanticised visions like this into popular society.
Tools designed to ensure computer code in smart cars does not crash has been inspired by hungry penguins.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
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.
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