74 million Number of African children that the World Health Organization hopes to vaccinate this October and November in an attempt to eradicate the polio virus before 2005
11 Number of months, beginning in August 2003, that the Nigerian government halted polio immunizations amid rumors that the vaccine was spiked with the AIDS virus
1,148 Polio cases contracted worldwide during that time period
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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