May 21, 2013 -- Updated 1448 GMT (2248 HKT)
Ali Ferzat, the Syrian cartoonist whose hands were broken after he drew a cartoon critical of the regime, is undaunted in exile, convinced that he will live and draw in Syria again
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It's one thing to use Twitter for harmless fights, but Dean Obeidallah says there's no excuse for racist, sexist, or homophobic rants
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Joseph Nye says history shows that external events can shape the last-term plans of presidents in a final term, even when scandal intervenes
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Meg Urry says loss of the failing, planet-finding Kepler satellite would be huge for NASA--but one way or another, it's a matter of time before we find signs of life on other worlds
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H. Gilbert Welch