The Top 10 Science Stories of 2011

Inevitably, year-end lists invite plenty of debate and criticism, and Scientific American 's is no exception. Certainly, we could have included the discovery of new worlds beyond our solar system, including Kepler 22 b, an exoplanet in the “Goldilocks” zone of habitability, as well as the first known Earth-size exoplanets .

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The Top 10 Science Stories of 2011