The precautionary principle outlined in The Bergen Agreement, signed by Canada in 1990, has become, over the past fifteen years, part of customary international law and has been included in virtually every recently adopted treaty and policy document related to the protection and preservation of the environment. It states: "policies must be based on the precautionary principle. Environmental measures must anticipate, prevent and attack the causes of environmental degradation. Where there are threats of serious or irreversible damage, lack of full scientific certainty should not be used as a reason for postponing measures to prevent environmental degradation". The unprecedented rapidity with which industrial wind turbine developments are being proposed and constructed in Ontario, raises major concerns about the efficacy of the Green Energy Act which has allowed and promoted this phenomenon.
Threats From Industrial Wind Turbines to Ontario’s Wildlife and Biodiversity
Stelling, K.; Petrie, S. (2011). Threats From Industrial Wind Turbines to Ontario’s Wildlife and Biodiversity. Report by University of Western Ontario. pp 14.