The Financial Times is reporting that the Chinese government edited down a World Bank study detailing the effects of pollution on the health of its people. The reasoning was that it could promote social unrest. Basically, they thought it might make some folks a little angry to learn why 750,000 people are dying prematurely each year. Gee, you think so?

According to the research group, as many as 400,000 people die annually from air pollution in cities, and 300,000 pass away from breathing bad air indoors. A draft version of the report is available here.—Gregory Mone

On December 27, 2004, while the world was focused on the Indian Ocean tsunami, a few astronomers were contemplating the possibility of an even deadlier disaster: that of a massive asteroid striking Earth. A fifth of a mile wide—heftier than the space rock that leveled a vast swath of Siberian forest in 1908—Near-Earth Asteroid 2004 MN4 had grabbed the attention of NASA scientists just before Christmas. They put the chance of an April 13, 2029, collision at 1 in 2,700 and two days later upped the odds to 1 in 165.