CHEMICALS in weedkillers widely used by farmers and gardeners have been found to disrupt animal reproduction at levels well below those supposed to be safe. In fact, their effect is worse at low doses, casting doubt on standards for assessing the safety of any chemical.
Several epidemiological studies looking at farmers or people living in areas where pesticides are used have linked such products to problems such as miscarriages, stillbirths and birth defects. But the studies don’t directly prove that the chemicals are to blame.
So a team including Warren Porter of the University of Wisconsin-Madison looked at the effects…
