How monarch butterflies are wired for navigation

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In their extraordinary annual migration from North America to Mexico, monarch butterflies are known to use the angle of polarized sunlight as a celestial guide to help them keep to a straight and true path southward. But details of their navigational machinery have remained a mystery.

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All News summaries for May 04, 2005

New penguin species found in New Zealand

7 hours ago | User rating: not rated yet

(PhysOrg.com) -- Australian and New Zealand researchers have used ancient DNA from penguin fossils to make a startling discovery that may change the way we view species extinctions.

Falling home ownership, equity, affect college enrollment

9 hours ago | User rating: not rated yet

Sagging college enrollments may be the next symptom of the sub-prime mortgage mess, according to a University of Michigan economist.

Scientists fight stem rust UG99 before it becomes a threat

9 hours ago | User rating: not rated yet

(PhysOrg.com) -- Wheat breeders and plant pathologists at Montana State University are part of a global effort to develop varieties of wheat resistant to a new fungus. UG99, a stem rust strain that was first discovered in ...

Scientist Unlocking the Secrets of Sea Slug that Lives Like a Plant

9 hours ago | User rating: not rated yet

(PhysOrg.com) -- Photosynthesis generates the oxygen needed for life on earth as well as the biomass for food and biofuel production. The process is driven by the absorption of the sun’s energy by tiny green "bodies" called ...

Archeologists say they found witch doctor skeleton

9 hours ago | User rating: not rated yet

(AP) -- Archeologists believe a 12,000-year-old skeleton found in a grave containing 50 tortoise shells, a leopard pelvis, a cow tail and part of an eagle wing is the remains of a witch doctor.

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