A Report on Non-Ionizing Radiation

navigation: Microwave News Article Archive (2004 - )

January 16, 2015

“Evidence for Geomagnetic Imprinting and Magnetic Navigation in the Natal Homing of Sea Turtles,” Current Biology, February 2, 2015.

“[O]ur results provide the strongest evidence to date that sea turtles find their nesting areas at least in part by navigating to unique magnetic signatures along the coast.…These findings…suggest that similar mechanisms underlie natal homing in diverse long-distance migrants such as fishes, birds and mammals.” Open access.

June 24, 2014

“A Magnetic Compass Aids Monarch Butterfly Migration,” Nature Communications, posted online June 24, 2013.

Open access. A “vulnerability to consider is the potential disruption of the magnetic compass in monarchs by human-induced [EM] noise.”

September 26, 2007

Birds may actually be able to "see" a magnetic field. This is the fascinating and surprising conclusion of a group of German scientists who have been studying migratory birds. Not everyone is yet convinced that garden warblers can visualize the geomagnetic field (see today's news item on Nature.com), but the new German paper reminds us how little about we know about how living systems interact with electromagnetic signals.

May 14, 2004

Very weak radiation can have a profound influence on a robin’s magnetic compass. A group led by Prof. Thorsten Ritz has shown that 7 MHz signals of less than 100 nanowatts per square centimeter can disorient the bird’s migratory flight. The new findings appear in the May 13 issue of Nature.

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