In order for China, or any country, to fight air pollution and climate change, accurate real-time data is essential. We need to know not only what is going wrong but also when things are improving.
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So when and if Canada vows that it will offset the burning of the tarsands through a similar uncapped system, there is no reason to view that promise is anything but empty. That's why it's so crucial that the president's promise be rock solid.
The Obama Administration has a simple choice -- help stop global warming and reject the Keystone XL project or approve Keystone XL and help another country fail to meet its global warming commitments.
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