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One of the most common intestinal parasites in the United States, Giardia, can cause the stool to appear yellow—and have a soft or liquid consistency—because it causes the food to move quickly through ...
In the desert of Saudi Arabia, a “cryptic” creature with a “window” in its eyelid climbed along a pile of rocks. Its ...
Pupils at a primary school on the Lizard Peninsula were feeling in the pink - and blue, green and yellow - when they held ...
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