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Science, Tech & Environment

Is an artificial tree part of the solution to climate change? These guys think so.

Trees are nature's tool for pulling carbon dioxide out of the air, but there aren't enough trees in the world to suck up all the CO2 humans are putting there. That's why researchers are pushing to create artificial leaves to help fight climate change. The World's Ari Daniel visits with two teams of researchers pursuing different approaches to the formidable challenge.

Arts, Culture & Media

He calls it 'plastic fantastic' — beautiful artwork made out of discarded plastic (Video)

The materials needed to make art can be expensive, too expensive for some. But one artist in South Africa has found away to combine his artistic passion and his love of recycling. Mbongeni Buthelezi collects plastic bags from the streets around his Johannesburg studio and melts them to create a unique kind of art — he calls it "plastic fantastic."

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