GREEN SCIENCE

Green Science is the application of eco-friendly thinking to scientific disciplines. Learn about global warming, pollution and other impacts on nature and the planet, plus what we can do to combat them.
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5 Walkable Cities

What makes a city walkable? It's not just sidewalks. You have to be able to access jobs, stores and places of entertainment while feeling comfortable and safe. What are five cities in the United States that have risen to the challenge?

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