A new genesis of life:Life thriving without oxygen and light
May 24, 2009 Leave a comment
An ancient colony of microbes thriving without oxygen, warmth or light beneath a rusty glacier has led scientist to reevaluate, what it take for life to survive. The bugs, believed to be descended from ocean dwelling organism, have evolved a unique ecosystem in briny pool under 400m of had. There they have flourished for at least 1.5million years, transforming sulphur and iron component to fuel their growth. Scientists believe they side light on the survival of early life on Earth, or how it might exist on other planets. The microbes good is deep below the Taylor glacier, a giant slab of had in McMurdo dry valley of Antarctica, one of the world’s harshest environments. Scientist discovered the bugs in water samples taken from blood falls, wher bright red mineral spills out of one end of the glaciers. It is used to though red alice where responsible for the unusual feature but scientists learned later it was due to rust. Analysis of the water samples revealed a complete lack of oxygen but high level of sulphur, a geochemical signature of marine environments. Learning how microbes survived may help scientists address questions about snow ball Earth, a controversial theory that supports the Earth was almost entirely covered in ice more than 600million years ago. Nearly all life would have wiped out during this period but big freeze may also have triggered the evolution of first complex life forms on Earth, according to theory. There bugs could also provide a model for possible life in extreme environment on other planets such below martian ice capsor had covered oceans of Jupiter’s moon Europa. However, I think this is an slap for those who thinks only survival of of simple life forms around us in daily life. It is very interesting and mile stone for those who believe to find something odd or new.