A legislative proposal in Connecticut would mandate instruction on climate change in public schools statewide, beginning in elementary school. Connecticut already has adopted science standards that call for teaching of climate change, but if the bill passes it is believed that it would be the country’s first to write such a requirement into law. “A lot of schools make the study of climate change an elective, and I don’t believe it should be an elective,” said state Rep. Christine Palm, a Democrat from Chester who proposed the bill. “I think it should be mandatory, and I think it should be...