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  • The man who paves India's roads with old plastic

    Dr. Rajagopalan Vasudevan, a chemistry professor in India, has a new approach to plastic. "It's time we stop seeing plastic as the enemy and turn it into our biggest resource," Dr. Vasudevan says. By adding molten used plastic into a mixture of bitumen, a substance that binds roads, the professor found a solution that stuck. India has since paved over 16,000 km of roads since 2002 using plastic as part of the process.

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  • The Bricks Helping to Rebuild Gaza

    To rebuild Gaza, Green Cake manufactures construction blocks out of locally-available ash and rubble. It’s a low-cost and reliable alternative to importing supplies from Israel.

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  • Helping Nigerians move from the slums to affordable green homes of their own

    Comprehensive Design Services (CDS) is a Nigeria-based company that uses traditional Nigerian architectural techniques and Bio-Climatic Design to build housing that is both affordable and green. This approach, which they hope to expand to the rest of Sub-Saharan Africa, is making a dent in the growing population relegated to slums and poor housing conditions in the face of rapid urbanization.

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  • Transforming plastic waste into paving stones

    After realizing that the accumulation of plastic bags was a becoming a devastating issue for the environment, a student from Morocco decided to take action by combining his concern with his passion for robotics and science. The outcome was the creation of eco-friendly paving stones made out of a mixture of discarded plastic, sand, and concrete.

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  • Schools Lead the Way to Zero-Energy Buildings, and Use Them for Student Learning

    At Virginia's Discovery Elementary, students learn in a unique environment - one of the 89 "net-zero" schools in the country. Instructors creatively incorporate the building's data, on different energy-saving functions, into state standard lesson plans.

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  • How land under solar panels can contribute to food security

    As land for solar energy production has increased around the world, cities have discovered that the same land can provide robust “pollinator-friendly” crops. These lands function as “dual-farms” because the agriculture grows under “solar canopies,” thus serving more than one purpose. They cut down on electricity costs, and increase crop production as well as the amount of pollinating insects in the surrounding areas.

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  • Environmental impact bonds can help cities invest in green infrastructure

    Environmental impact bonds (EIBs) are a relatively new form of financing that combine private investment with government funding in a “pay for success” model. They are different than municipal bonds in that they are intended as a more experimental approach: for instance, Washington, D.C. started using EIBs to test green infrastructure and evaluate the results. Though all current EIBs are too early-stage to show formal evaluations, they are helping promote sustainability initiatives in D.C., Baltimore, and Atlanta.

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  • Why Environmental Impact Bonds Are Catching On

    Environmental impact bonds allow cities, sometimes even community members, to share the risk and rewards with investors that are backing innovative possible solutions to big problems. This plan allows for large-scale green infrastructure to be piloted in areas across the U.S. where it is most needed.

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  • Paris is building the eco-community of the future right now. Here's how.

    Setting the bar high for environmental sustainability can encourage innovation and experimentation. Developers of Paris’ new Clichy-Batignolles eco-district are reducing the neighborhood’s carbon footprint in nearly every way imaginable. Solar panels and vegetation cover the energy-efficient buildings, the water table under the 10-hectare (25-acre) park provides geothermal heating, deliveries are directed to a central drop-off site, and much more.

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  • This African city is turning a mountain of trash into energy

    A growing population has led to a growing mountain of trash for Africa. One city is taking control of the issue by turning that trash into energy which not only reduces the amount of physical rubbish by 80 percent, but also powers 30 percent of the city's household energy needs.

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