PORTLAND, Maine (AP) - Sharks use the Earth's magnetic field as a sort of natural GPS to navigate journeys that take them great distances across the world's oceans, scientists have found.Researchers said their marine laboratory experiments with a small species of shark confirm long-held speculation ...

https://apnews.com/article/fl-state-wire-sharks-science-environment-and-nature-abf97cf60bb15f7fbf3bfed74671e398

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