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Science news in brief: From Jurassic mystery to genetics of sleep

Plus a roundup of other news from around the world

Gene therapy could be life-changing, but only for the lucky ones

Gene therapies could offer long-term fixes for a host of incurable illnesses – but not for everyone. So researchers are looking for ways to help the treatments sneak past our antibodies, says Jovana Drinjakovic

Slim people should thank genes not 'moral superiority' for weight

‘We have far less control over our weight than we might wish to think’

'How I discovered my ancestor freed slaves in North Carolina'

'The power of discovering our origins is through connection and collaboration'

Drugs for rare genetic breast cancers 'could help thousands more'

Some 8,000 more patients may respond to the drugs than are receiving them at present

What does it mean to be human?

Genetics may have had a greater influence on the ability of humans to survive than previously thought. Gaia Vince travels to the caves of Gibraltar in search of answers