https://apnews.com/c514bc79676b458d8224345f2b609699 > WATERLOO, Iowa (AP) — An Iowa high school science teacher has been placed on administrative leave after he made what appeared to be a threatening social media comment about 16-year-old climate activist Greta Thunberg. > The Waterloo Community School District said Friday in an emailed statement that the teacher, Matt Baish, has been placed on administrative leave pending an investigation.