Accidental Vintage Rider
Join Date: Apr 2007
Location: San Francisco
Bikes: '67 Schwinn Varsity, late 70's(?) (Mike) Melton
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Some birds "see" the earth's magnetic field..
I thought this was pretty interesting. Think of the grams they save by tossing their compasses on cross-country flights.
Gleaned from DKOS weekly science article roundup.
Last edited by pohlf; 07-10-10 at 08:21 AM.