There's a Waterfall in Antarctica That Bleeds Red – Here's What's Hiding Inside It

A new paper in Antarctic Science has finally explained how Blood Falls—a red-hued waterfall in Antarctica—forms from iron-rich brine trapped beneath Taylor Glacier for at least 1.5 million years, and revealed that hundreds of meters below the ice, an entire community of bacteria has survived in darkness and without oxygen for over a million years by using sulfate as their energy source.