Mariette DiChristina is editor-in-chief of Scientific American in New York, New York.
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40:50
2014 Science Year in Review
From the Ebola outbreak to the Rosetta mission to a comet, a look at the biggest science stories of the year.
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46:26
A Year of Ups and Downs for Science
Ira Flatow and a panel of editors and bloggers discuss the year’s biggest science stories.
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41:46
Looking Back on a Year in Science
What are your picks for the top science stories of 2012?