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Philip Yam is the managing editor of ScientificAmerican.com, responsible for the overall news content online. He began working at the magazine in 1989, first as a copyeditor and then as a features editor specializing in physics. He is the author of The Pathological Protein: Mad Cow, Chronic Wasting and Other Prion Diseases.

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大众科学 Magazine Vol 285 Issue 1This article was originally published with the title “Going Ballistic” in 大众科学 Magazine Vol. 285 No. 1 (), p. 28
doi:10.1038/scientificamerican0701-28b
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