Scientists added sulfuric acid weekly to an Ontario lake for 17 years, lowering pH from 6.8 to 5.2; decades later its lake trout population remains below half its former level
Representative Image (AI-generated) A lake in northwestern Ontario became the setting for a landmark experiment on the effects of acid rain. For 17 years, scientists deliberately added sulfuric acid to Lake 223 every week, gradually changing the water’s chemistry to mimic the effects of acid rain that was damaging lakes across North America and Europe. […]