In the heart of Antarctica, a blood red waterfall pours out of a glacier and cascades down 100 feet. It took more than 100 years for scientists to discover the source of this eerie feature.&nbsp;<hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>