1. Acid rain - Atlantic Canada

http://www.ns.ec.gc.ca/msc/as/as_acid.html

2. EPA- Acid Rain Resource

http://www.epa.gov/airmarkets/acidrain/#what

3. Acid Rain - British Columbia
http://royal.okanagan.bc.ca/mpidwirn/atmosphereandclimate/acidprecip.html

4. Acid rain Links-ECONET

http://www.econet.apc.org/acidrain/