A study of some 1,500 popular children’s toys sold in the United States found that one in three tested contained “medium” to “high” levels of a range of toxic chemicals including arsenic, lead, mercury, and others, according to green group the Ecology Center. “Our hope is that by empowering consumers with this information, manufacturers and lawmakers will feel the pressure to start phasing out the most harmful substances immediately, and to change the nation’s laws to protect children from highly toxic chemicals,” said EC’s Jeff Gearhart.