Canadian provinces feud over Pacific pipeline project

A pipeline project aimed at boosting Canada's overseas oil sales and reducing reliance on US buyers has pitted two provincial governments against each other, sticking the prime minister in the middle.

Controlling a vortex using polymers

A vortex in the atmosphere can churn with enough power to create a typhoon. But more subtle vortices form constantly in nature. Many of them are too small to be seen with the naked eye.

Dakota pipeline company sues environmental groups

The operator of a controversial US oil pipeline, which was the focus of months of protests by Native American tribes, on Tuesday sued several environmental groups, claiming they spread false information and incite violence.

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