The seminar seemed straightforward enough. Four experts planned to talk about whether artificial grass, which is used on playgrounds and sports fields nationwide, has health risks for children.
But January’s seminar never happened, after the four speakers were sued for defamation by Polyloom, an artificial-turf maker, based on promotional material for the seminar.
“This was before we even said a word,” said Kyla Bennett, an ecologist formerly with the Environmental Protection Agency who is one of the four defendants.