Numbers

17,000 Number of injuries requiring hospital treatment that are suffered by children on school buses each year, according to a report that recommended that districts consider mandating seat belts on buses

23 million Number of children who ride school buses

53% Estimated increase in global demand for energy--mostly fossil fuels--by 2030. Developing nations, primarily China and India, are responsible for 70% of that growth

2010 Year China is projected to overtake the U.S. as the world's largest emitter of carbon dioxide

11 million Number of bottles of generic acetaminophen recalled after traces of metal were found in 500-mg caplets of the pain reliever

200 Number of caplets, out of 70 million scanned by a metal detector, found to contain tiny bits of wire

100,000 Number of new blogs created each day, according to blog tracker Technorati, which estimates 1.3 million posts are added daily

4,000 Number of blogs in the "blogging elite," which have at least 500 other blogs linking to them

Sources: Center for Injury Research and Policy (2); International Energy Agency (2); CNN (2); BBC (2)