《美国科学家》【American Scientist】2016年9/10月PDF下载

American Scientist – September-October 2016
English | 68 pages | True PDF | 8 MB
On the Cover
September-October 2016 Volume 104, Number 5
In an election season, prospective voters take their impressions of the candidates not only from what they say but also on the basis of other aspects of their presentation, such as intonation, gestures, and appearance. Recent studies have identified another trait that contributes subtly but significantly to voters' impressions..
FEATURE ARTICLES
How Voice Pitch Influences Our Choice of Leaders *
Casey A. Klofstad, Stephen Nowicki, Rindy C. Anderson
Candidates' vocal characteristics influence voters' attitudes toward them.
Invasion of the Flatworms *
Ronald Sluys
Easily hidden in imported plants, some land flatworms are conquering the world.
Mathematical Induction and the Nature of British Miracles *
Daniel S. Silver
A mathematical method of proof challenged traditional beliefs.
Seeds on Ice
Cary Fowler
In the Arctic Circle, the Svalbard Global Seed Vault is not waiting for doomsday, but is a secure backup for crop diversity.

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