Blood Falls
amillikan | April 20, 2009
As apex organisms in the scope of Earth's multi-tiered web of life, most of us go about our day-to-day activities oblivious to the fact that bacteria are literally everywhere. Microorganisms can thrive in the most surprising locales—places totally inhospitable to human life. Recently, scientists from Harvard documented a flourishing bacterial ecosystem buried under 400 meters of ancient glacial ice; more common bacteria, Salmonella may lurk on your dinner plate, as a report citing 48,600 infections across ten states in 2008 attests; and if it's any indication from this scientific pursuit,…
edyong | April 17, 2009Antarctica normally conjures images of white and blue, but the frozen continent can sometimes bear more unexpected colours. Take the Taylor Glacier - when geologist Griffith Taylor first explored it a century ago, he found a bizarre reddish stain that seemed to spill waterfall-like from the glacier's snout. The area became evocatively known as Blood Falls.
The source of the blood-red colour is an underground saltwater lake that was trapped by the encroaching glacier at least 1.5 million years ago. The temperature of the water is -5 Celsius, but it's so salty that it doesn't freeze. It's…