Geologists in the western deserts of Australia have discovered what could be the fossilized remains of ancient bacteria-like creatures that must have fed on sulfur. There was a lack of oxygen and a run-away greenhouse gas effect without plants having evolved at that time, so sulfur and methane would have been dominant. If proven true, these fossils would be around 3.4 billion years old and will help us to understand how early life developed on a savage planet.
No comments:
Post a Comment