Razor flyer

During India’s kite-flying season, birds’ “injuries are caused by ‘manja’, the string used to fly kites. Gummed and coated with powdered glass, the strings are made dangerously sharp to slash the thread of an opponent’s kite mid-air during kite fights.” (http://www.theguardian.com/environment/2015/jan/14/uttarayan-bird-fatalities-kite-festival-india-makar-sankranti-january-14)

Next week: pooh sticks laced with mercury to make them sleeker.

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