Many scientists agree that we’re headed for another mass extinction like the one that wiped out the dinosaurs.
Thirty-five years ago, the Iranian Revolution put an Islamic government into power and gave Americans their first taste of Islamic extremism.
Texting-only lanes, the ethics of tipping, OK turns 175, and more
A journalist argues that joining the two nations would create an unstoppable superpower.
Two experts weigh in on the issue.
Some lighter looks at the news
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