IT DIDN’T take long. Just a few thousand years after humans began to domesticate crops, a wide variety of weeds had adapted to exploit the new farmlands – with some species seeming to have evolved, like crops, to be completely dependent on cultivated land.
Given the chance, weeds will take root in most agricultural settings. Today their presence lowers crop yields by 10 per cent globally, causing losses of tens of billions of dollars in profits each year.
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