Curious Minute answer
What makes Antarctica's Blood Falls look red?
The answer
Iron-rich brine
Send this minute
Know someone who'd pause on this one? Send them the question.
More Curious Minute
Try today's live question, or browse previous answers when you want another quick dive.
Keep the next minute coming
Like this answer? Get tomorrow's question around 8 AM.
Why it's right
Blood Falls gets its color from iron-rich brine seeping from beneath Taylor Glacier. The salty discharge stains the glacier's face red. It also carries evidence of a microbial ecosystem living below the ice.
How readers answered
A20%
B80%
C0%
D0%
One more thing.
We may earn a commission.
Sources: nsf-gov-resources.nsf.gov