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The ubiquitous city dwellers descended from Middle Eastern racing pigeons, new DNA studies show.
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Dogs were once prized for their fat content, suggest studies of 2,000-year-old canine burials.
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A thought observed channeling through a fish's brain was about -- you guessed it -- food.
The find suggests these parasites may have plagued animals for much longer than previously known.
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The discovery of dinosaur feathers is changing the way we look at these prehistoric creatures.
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