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Chris Sorensen

Wal-Mart’s friendly face
Business

Wal-Mart’s friendly face

The retail giant is keen to show its softer side
Choking the oil sands

Choking the oil sands

Environmentalists are opening a new front in their war on Alberta oil—attacking pipeline projects vital to the industry’s future
Cockpit crisis

Cockpit crisis

In five years, over 50 commercial airplanes crashed in loss-of-control accidents. What’s going on?