National / International News
Scientists at the University of Rochester in New York have developed "self-cleaning" metal that enables water droplets to gather dust particles, then bounce and slide away.
An MEP who defected from UKIP to the Conservatives has branded his old party a "vanity project" for its leader Nigel Farage, who runs it "like a dictator".
A council says it has "started work" on bringing 11 or more prosecutions over a "mile-long" fly-tipping site in Essex.
Maria Sharapova will face Eugenie Bouchard in the Australian Open quarter-finals after the pair won in contrasting styles.
Libya's Islamist group Ansar al-Sharia confirms its leader Mohammad al-Zahawi has died, after apparently being wounded in October.
People in Bolivia have been holding a fair with a difference. Everything is in miniature.
Nasa's mission to Pluto gets under way in earnest as the New Horizons probe starts taking the pictures needed for July's close fly-by.
Greater efforts are being put into ridding US baseball of the tradition of chewing tobacco which has been linked to cancer deaths.
The fight against baseball's toxic tradition
Greeks vote in general elections, with the anti-austerity Syriza and the centre-right New Democracy parties seen as front-runners in a tight race.
Parents and coaches at junior rugby matches in Yorkshire are being asked to watch in silence as part of a drive to "challenge pitch-side behaviour".
US President Barack Obama is due to arrive in India for a three-day visit, protected by one of India's biggest-ever security operations.
Interviews with authors up for Costa Book of the Year
Holocaust survivors hand on their stories to school pupils
Thousands of Venezuelans attend an opposition march blaming failed government policies for widespread shortages.
The islanders who'd rather not be linked to the mainland
Billions of pounds owed in child maintenance may never be recovered, government accounts show - though ministers say the debts are not "forgotten".
Where do the wealthiest 1% live?
Chelsea's defeat by Bradford was the biggest in FA Cup history, says Robbie Fowler - plus more reaction to a day of cup shocks.
A body is found by police in West Lothian investigating the disappearance of a 47-year-old man.