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Researchers May Have Found Fabled Sunstone - Raphael Satter, AP

A rough, whitish block recovered from an Elizabethan shipwreck may be a sunstone, the fabled crystal believed by some to have helped Vikings and other medieval seafarers navigate the...

Kitty Compass: Cat Walks 200 Miles Home - Veronique Greenwood, Time

When a battered, skinny tortoiseshell cat wandered into a yard in Florida earlier this year, she could have been any other stray, but she was nothing of the kind. She carried an...

Magnetism Helps Salmon Find Home - National Science Foundation

When migrating, sockeye salmon typically swim up to 4,000 miles into the ocean and then, years later, navigate back to the upstream reaches of the rivers in which they were born to spawn...

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