18.11.2011 21.Cheschwan. 5772
Post-Mubarak Egypt faces the challenge of developing cost-effective technologies to use straw efficiently, rather than burning it.
After the rice harvest each autumn, Egyptians take a deep breath and brace for the "black cloud," a thick layer of smog from burning rice straw that spreads across Cairo and the Nile valley for several weeks.
Environmentalists blame the burning of agricultural "waste," mostly rice straw, for the pall of smoke that turns the capital's already noxious air into an even more toxic mix….