The presenter confirmed that she was expecting her first child with her husband on live television after Louis Walsh and Will Young made comments during the filming of The Xtra Factor.
Walsh let the news slip after congratulating her, to which the star replied: "I don't know if people know that yet, but yes, I'm pregnant. I'm feeling emotional already tonight, let's move on."
She gave birth to a boy named Harry James Baldwin, weighing 7lb 4oz, on May 11 2009.
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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