If you live in the city and you like fresh veggies, herbs and flowers, how about planting a garden on your roof? “Green” roofs, those increasingly popular urban rooftops covered with plants, could help fight global climate change. Intro theme and music by Kevin MacLeod. Creative Commons licensed audio from freesound.iua.upf.edu.

Confronting Climate Change: “Green” roofs can help fight global warming

Taking inspiration from trees, scientists have developed a battery made from a sliver of wood coated with tin that shows promise for becoming a tiny, long-lasting, efficient and environmentally friendly energy source. Their report on the device — 1,000 times thinner than a sheet of paper — appears in the journal Nano Letters.

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Confronting Climate Change: “Green” roofs can help fight global warming

Confronting Climate Change: “Green” roofs can help fight global warming