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.
©2012 Scientific American