Paper wasn't always easy to make or use. Early writing appeared on cave walls, bamboo, and papyrus. True paper was credited to Cai Lun in 105 AD. It was once expensive, but after the Black Death, cloth scraps made it cheaper. Pens evolved too-from messy feathers to the ballpoint. Today, paper contributes heavily to pollution-about 10% of greenhouse gases. The future? E-paper: the digital alternative to traditional paper. Hrají: Grub Smith, Dennis Heath Režie: Lee Thean-jeen, Mimi Soeteman, Karan Low Rok: 2012
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