Beijing, Bracing for 5 Days of Heavy Pollution, Issues Red Alert The most severe notice in a four-tier system requires schools to close and half of all privately owned cars to stay off the roads. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Federal Ban on Female Genital Mutilation Ruled Unconstitutional by JudgeNew male contraceptive GEL in progress and 'closer to reality' than pill, reveals expertStar Trek-inspired plane powered by ‘IONIC WINDS’ unveiledNASA asteroid WARNING: 390 FOOT asteroid bigger than Big Ben on ‘Earth Approach’ on SUNDAYIt’s Cold Outside? Gather Around the Turkey and Argue About Climate Change.Visitors From the Ocean’s Twilight Zone