President Obama rejected Wednesday a proposal to build the Keystone XL oil pipeline from Canada to the U.S. Gulf Coast — generating intense debate in both countries. Murray Mandryk, political columnist for the Leader-Post of Sasketchewan, offers a Canadian perspective on the controversy.
Climate simulations show that massive technological interventions, known as "geoengineering," could protect food crops from some of the damaging effects of global warming. But researchers say local effects are hard to predict, so geoengineering may not be worth the risk.
U.S.-based solar panel manufacturers say inexpensive panels from China are hurting their business and want a tariff slapped on the imports. But other parts of the industry, such as installers, say the cheaper panels are driving a solar power boom in the U.S.
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