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Wiki's Assange appeal in July

Britain's High Court has set a July date to hear an appeal by WikiLeaks founder Julian Assange against extradition to Sweden to face sex crime allegations.

Court officials said a two-day hearing is scheduled to begin July 12.

In February, a judge ruled that Mr Assange should be extradited to face allegations of rape and sexual molestation against two women.

Judge Howard Riddle rejected arguments by Mr Assange's lawyers that he would not get a fair trial in Sweden.

Mr Assange denies wrongdoing.

Surrogate kids 'not French'

France's top court has refused to give French nationality to children born of surrogate mothers abroad.

The Court of Cassation has upheld a lower court's ruling on the case of twin girls who were born to an American surrogate mother but have French parents.

The lower court refused to inscribe the twins in France's civil register -- a basic requirement for essential documents in France such as identity cards or passports.

The French government does not recognise surrogacy.

Stress memory loss discovery

Scientists claim to have discovered the role stress plays in memory loss in old age.

Researchers have shown how two receptors react to the stress hormone cortisol, linked to forgetfulness as people age.

The study on older mice found that one receptor was activated by low levels of cortisol, which helped memory.

However, once levels of the hormone were too high they spilled over on to a second receptor, activating brain processes which contribute to memory impairment.

When the receptor linked to poor memory was blocked, the memory recall problem was reversed.

The discovery could lead to treatment for conditions such as early Alzheimer's.

2bn will watch royal wedding

The wedding of Britain's Prince William and Kate Middleton on April 29 will be watched by about two billion people worldwide.

The wedding preparations are going well and the day is likely to be a major global event, Britain's culture secretary Jeremy Hunt said.