15 Number of people (14 students, one teacher) who died in Littleton, Colo., massacre
173 Number of violent deaths in U.S. schools between 1994 and 1998
50% Percentage of children ages 9 to 17 who are worried about dying young
31% Percentage of children ages 12 to 17 who know someone their age who carries a gun
22% Decrease in organizations granting $50,000 or more each year to HIV/AIDS prevention, treatment and research
$30 million U.S. philanthropic support for HIV/AIDS prevention, treatment and research, down from $37 million in 1996
33.4 million Number of people worldwide living with HIV/AIDS
15% Percentage...