--Lakes and waterways in North America are struggling to recover from the effects of acid rain, despite reduced emissions of the pollutants that cause it.
--Although the 1990 US Clean Air Act has reduced acid rain in northeastern North America, many lakes in eastern Canada are still beyond their critical load - the amount of acidification that harms the organisms living there
--Many of the province's 31,000 small lakes have a pH value of about 5, making them dangerously acidic for fish and plants,