Climate Signals summary: Human-caused climate change, which is worsening heat waves, is causing some schools to close early for 'heat days'.
Temperatures kept rising in Philadelphia and Baltimore. Finally, it was just too hot to keep students in classrooms without air conditioning. On Tuesday, both systems let students out early.
For Principal Richard M. Gordon IV, it was just another early-summer day in the halls of his West Philadelphia high school, where sweltering temperatures, high humidity and a lack of ventilation made classrooms so uncomfortable that students could barely sit still.
“Can I honestly say effective learning is happening in my building? I can’t,” said Gordon, the principal of Paul Robeson High School.
Climate change poses a growing threat to American schools. Regions where extreme heat was once rare — from the Northeast to the Pacific Northwest — now periodically find their buildings unbearably hot as spring turns to summer and again when classes resume in August or September.
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