WHSD? The Week in Science

The study of lice DNA has revealed humans first started wearing clothes 170,000 years ago. Through analysing DNA sequencing of lice, David Reed was able to calculate when clothing lice genetically diverged from human head lice.

A new study has shown over 3000 survivors of the 2001 World Trade Centre attacks are experiencing symptoms of post-traumatic stress disorder (PTSD). The collaborative study found that survivors with low incomes (>$25,000 per year) were eight times more likely to suffer from PTSD than high-earners (<$100,000 per year).

A team of NASA scientists have come closer to figuring out the nuts and bolts of the Sun’s atmosphere. Data from NASA’s Solar Dynamics Observatory showed gas jets, known as spicules, reaching temperatures of millions of degrees, and sheds new light on why the Sun’s atmosphere is so much hotter than its surface.

A study by Newcastle University shows the importance of timing in healthy brain development. Dr Marcus Kaiser and Mrs Sreedevi Varier found that neurons need to make connections early, when they are physically close together, to function properly later on.

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