STAR POWER: Best known as an ex-model and the infamous ex-wife of Sir Paul McCartney, but describes herself as a charity campaigner.
PARTNER: Matt Evers
WHAT DO TORVILL AND DEAN THINK? Heather loves a challenge and is very focused. She is setting the bar very high for herself and won't let anything hold her back. She tries hard and we are very impressed with her determination. She never says she can't do a new move and will offer up ways and ideas of adapting moves so she can perform them better.
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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