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Month: April 2021

Earth Day with Ken Alex and Ethan Elkind

Earth Day, which falls on April 22 and is the annual celebration of the birth of the modern environmental movement, began in 1970. It is a day of unity for environmentalists, groups and organizations mobilized around specific environmental issues, and everyone in between. Once focused on more local environmental concerns, now on its 51st anniversary, the meaning of Earth Day is giving way to more organized international concerns of inspiring global action on climate change.

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Recycling with Deborah Raphael

Many “recyclable” materials are not recycled or even recyclable. While papers and metals are recycled at relatively high rates, recycling rates for plastic are below 10 percent. Most plastics display numerical codes, purporting to denote a standardized and elaborate recycling system. But the system is convoluted, sometimes confusing even recycling facilities and identifying recycling processes that are not used.

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Sustainable Biofuel with Yuxin Wu

Bioenergy is a form of energy produced through the conversion of biomass. Biomass is living organic matter that contains chemical energy captured during photosynthesis. When burned, biomass releases energy in the form of heat, which can be used to heat buildings or generate electricity. Alternatively, biomass can be converted into fuel or gas to be burned for energy at a later time.

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