tipping point (t?p?? point) — n the crisis stage in a process, when a significant change takes place

This last week, I went to Washington D.C. and joined the Tar Sands Action, the biggest environmental mass action in a generation. Over a thousand were arrested calling on Obama to deny the permits for the Keystone XL pipeline, which would cut down the middle of America’s heartland from Alberta to oil refineries on the Texas coast. The pipeline will carry billions of gallons of oil extracted from Indigenous land in northern Alberta.

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