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As nations dither, cities pick up climate slack

Their national governments hamstrung by domestic politics, stretched budgets and diplomatic inertia, many cities and provinces have taken a leading role—driven by necessity—in efforts to arrest galloping global warming.

dateJul 02, 2015 in Environment
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Iron: A biological element?

Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and a half billion years ago.

dateJun 25, 2015 in Earth Sciences
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