For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide—were an early lichen or fungus, like a “giant mushroom” ...

This 2023 satellite photo shows the heart-shaped Spirit Lake, which was transformed by the cataclysmic eruption of Mount St.

Nobody knew what they are, and whether they are only a temporary phenomenon, or if they have been sitting there for millions ...

Giant clams, some of the largest mollusks on Earth, have long fascinated scientists ... in Disney's "Moana 2" where the giant clam eats humans -- these vegetarian mollusks rely on algae living ...