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Publisher's Summary

In this issue:

"Tiny Plants That Once Rules the Sea": Why animal life in the ocean exploded with diversity, some 250 million years ago.

"Breaking the Brain Barrier": A new understanding of the blood-brain barrier as a living, mutable organ could revolutionize the treatment of diseases.

"Storm of the Century – Every Two Years": Protective measures for the U. S. East Coast against storms like Hurricane Sandy will be costly and disruptive.

"Armor against Prejudice": Even subtle reminders of prejudice against one’s sex, race or religion can hinder performance in school, work, and athletics.

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