Photo: National Science Foundation
Most people won't see Blood Falls in
person, but even in photographs, the sight is arresting: a blood-red waterfall
staining the snow-white face of Taylor Glacier. Glaciologists and
microbiologists have sought to determine what causes the mysterious red flow.
They've concluded that the source is a subterranean lake rich in the iron that
gives the water its red hue. Stranger still, recent research has revealed
microorganisms living 1,300 feet beneath the ice, sustained by the iron and
sulfur in the water.
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