Before this nation makes Wi-Fi in schools like it is in coffee shops, as the president recently urged, we need to consider what this could do to our children’s brains and bodies. Three years ago the World Health Organization declared cell phone and other wireless radiation a “possible human carcinogen,” — the same category as some pesticides, lead and engine exhausts. Since then evidence has mounted that such radiation can profoundly affect human biology, altering brain metabolism, damaging animals exposed during pregnancy and reducing sperm count. Before blanketing our pre-schools, kindergartens and middle schools with wireless radiation, we need a full life-cycle assessment of economic and health costs and benefits of wireless technology.