April 23, 2014 -- Updated 1911 GMT (0311 HKT)
Nicholas Tampio says teachers should not be pressured to teach to the Common Core tests and drain school budgets
Michael Green and Zack Cooper says if Kim is planning another nuclear test, the world must take the nation's aggressive intentions seriously and act
Robert Hickey says most new housing development is high-end, catering to high-earners
Martin Blaser says the overuse of antibiotics threatens to deplete our bodies of "good" microbes, leaving us vulnerable to an unstoppable plague--an "antibiotic winter"
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