The United States and Canada have amended a 40-year-old environmental accord on the Great Lakes, expanding its goals to tackle problems like invasive species, pollution and climate change.
"The challenges are even bigger today than they were then," said Dereth Glance, one of three Americans on the International Joint Commission, a bilateral group that monitors environmental agreements between the United States and Canada. "It's a matter of ongoing stewardship and collaboration with as many people as possible."
In addition to tightening goals for phosphorus reductions in Lake Erie, the amendments call for action on ships' ballast water, which introduces invasive species into the lake system, and climate change, which is expected to make heavy precipitation like that of 2011 more common.
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