Physics Professor Ponn Maheswaranathan, second from left, received a $50,000 grant renewal from the S.C. Department of Education for Winthrop to host a June 20-29 summer institute for nine physical science teachers, some of whom didn’t have training in the field. Here, Lisa Rivers, left, of Northwestern High School demonstrated a chemical reaction between the carbon dioxide found in human breath and limewater (an alkaline solution of calcium hydroxide, often used as an antacid), forming a cloudy precipitate, calcium carbonate. Some tubes did not contain limewater and, as a control, did not form the solid.

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