| global warming |
2,740,000/mo |
$1.17 |
| natural resources |
1,220,000/mo |
$0.85 |
| human evolution |
673,000/mo |
$1.60 |
| forensic anthropology |
60,500/mo |
$6.13 |
| human factors |
165,000/mo |
$3.09 |
| violence in schools |
33,100/mo |
$1.40 |
| air quality |
673,000/mo |
$2.07 |
| female scientists |
33,100/mo |
$0.63 |
| environmental health and safety |
49,500/mo |
$5.93 |
| female scientist |
33,100/mo |
$0.77 |
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| violence in school |
90,500/mo |
$1.29 |
| emergency management |
450,000/mo |
$7.42 |
| nutrition and health |
301,000/mo |
$2.14 |
| kids nutrition |
90,500/mo |
$1.77 |
| healthy food choices |
110,000/mo |
$2.21 |
| child nutrition |
110,000/mo |
$2.03 |
| desert ecosystem |
14,800/mo |
$0.36 |
| math books |
301,000/mo |
$0.81 |
| nutrition fact |
301,000/mo |
$1.31 |
| technology and education |
673,000/mo |
$10.65 |
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