Ten Things You Need to Know Today: Tuesday 11 Sep 2012

A new witness to the killing of the al-Hilli family in Annecy has come forward. The French hiker told Le Parisien newspaper that his car was waved down by the British cyclist who discovered the bodies. He said he visited the scene and then called the emergency services. French police are confident Zainab, 7, now out of a coma, can remember what happened.

British mobile phone users will soon be able to use fourth generation mobile broadband, also known as 4G. EE (formerly Everything Everywhere) announced the launch of their superfast mobile service at an event at London’s Science Museum today. The company, known to phone users as Orange and T-Mobile, says that by Christmas 40 per cent of the UK population will be covered by 4G.

Ofqual, the exams watchdog, ordered the Edexcel board to change its English GCSE grade boundaries shortly before this year’s exams, letters leaked to the Times Educational Supplement revealed. Teachers complained that GCSE grades dropped for the first time in 24 years, but Ofqual argues that it has a duty to maintain standards.

On the anniversary of 9/11, the US government has agreed to add 50 types of cancer to the list of illnesses covered by free treatment and monitoring. Some 1,000 deaths among emergency workers and survivors of the World Trade Center attack 11 years ago today have been attributed to the toxic dust spewed by the wreckage at ground zero.

The Duke and Duchess of Cambridge have landed in Singapore for a nine-day tour of the region in celebration of the Queen's Diamond Jubilee. Today they will attend the naming of an orchid in their honour. William's mother Diana was due to have an orchid named for her in 1997, but was killed in Paris just weeks before her Singapore visit.