Many cases of dementia may arise from non-inherited DNA ‘spelling mistakes’

15 Oct 2018

Only a small proportion of cases of dementia are thought to be inherited – the cause of the vast majority is unknown. Now, in a study published today in the journal Nature Communications, a team of scientists led by researchers at the University of Cambridge believe they may have found an explanation: spontaneous errors in our DNA that arise as cells divide and replicate.

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Giant planets around young star raise questions about how planets form

15 Oct 2018

Researchers have identified a young star with four Jupiter and Saturn-sized planets in orbit around it, the first time that so many massive planets have been detected in such a young system. The system has also set a new record for the most extreme range of orbits yet observed: the outermost planet is more than a thousand times further from the star than the innermost one, which raises interesting questions about how such a system might have formed. 

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