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In this issue:

"Is Space Digital?": Scientists are trying to do an end run around Big Physics to discover the true nature of information, matter and space.

"The Great Prostate Cancer Debate": Evidence shows that screening for prostate cancer does more harm than good.

"The Collision Syndrome": Football players diagnosed with Lou Gehrig’s disease may suffer from the effects of repeated blows to the head.

"The Future of Chocolate": Researchers are racing to fortify the embattled cacao tree.

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