Guess how many U.S. girls aged 15-19 give birth each year. Go ahead, guess. If you calculated the number at 3 percent you’re correct; if you guessed 24 percent, you’re American.
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"I was hiding behind a water tank in the front yard and saw them killing my father and brother and [taking] away my mother and sister. I don't know anything about them since," says Dunya, a 14-year-old Yazidi girl.
After decades of sobering news, a prominent conservationist says he is finally finding reason to be optimistic about the future of tropical forests.
There's been much debate about why animals took so long to evolve and thrive on Earth.
The familiar, shimmering apparition hovered above the room for a minute or two, then left, then reappeared for a bit longer before fading away.
Although online students come from different backgrounds, statistically they tend to fit a certain profile.
Executives at for-profit Grand Canyon University want to turn the company into a nonprofit, they said Wednesday, because of the "stigma" of being a for-profit.
Hackers have broken into an unclassified computer network used by President Obama's top advisers.
Are the super-rich more likely to be better educated?
Politics can have unintentional evolutionary consequences that may cause hastily issued policies to cascade into global, multigenerational problems, according to political scientists.