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Egg cells missing a key protein may be more likely to end up with the wrong number of chromosomes, but an mRNA injection that helps the cells make the protein reduces the problem
From the cost of childcare to the housing crisis, there鈥檚 no shortage of聽explanations聽for the dramatic global fall in the number of babies being born. These analyses, though, are all missing something, says cognitive and evolutionary anthropologist Paula Sheppard