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What's Hot This Week Snowflakes Re-Created Using Physics Ron Cowen, Scientific American Mathematicians have re-created the intricate patterns of ice formation. 'Kissing Bugs' May Suck Surprising Amount of American Blood Wynne Parry, LiveScience Senior Writer A surprising number of kissing bugs, which carry Chagas disease, had fed on humans. Sponsored by: More Accessible Than Ever: The Joy of Theoretical Physics Best Science Photos of the Week