The purpose of sleep appears to change when we are toddlers
18 September 2020
Sleep in babies seems to mainly help develop new brain connections, but at the age of around two-and-a-half there is an abrupt shift to brain repair
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Premium
Most fertility-tracking apps are unreliable but free apps work best
18 September 2020
An analysis of fertility-tracking apps available in the UK and Canada found that many use flawed methods to predict periods, and they should not be relied on to help conceive or as a contraceptive tool
Washing our clothes has created 5.6 million tonnes of microfibre waste
16 September 2020
Since 1950, 5.6 million tonnes of microplastic microfibres have been dumped on land and in the sea through clothes washing – and the rate of release is increasing
