Latest Stromatolite Stories
A new study, published in the journal Astrobiology, reveals the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in Australia.
Stromatolites were the earliest visible manifestation of life on Earth. Now, a team of researchers suggest that the disappearance of stromatolites may have been driven by single-celled organisms called foraminifera.
Supervolcanoes and cosmic impacts get all the terrible glory for causing mass extinctions, but a new theory suggests lowly algae may be the killer behind the world's great species annihilations.
Findings may provide insight into the origins of life on Earth, and even the search for life on Mars.
By Radley, Jonathan Twitchett, Richard J; Mander, Luke; Cope, John Journal, Vol. 165, 2008, pp.
Viruses and bacterial viruses (known as phages) are among the most abundant life forms on the planet. Two papers published recently in Nature, March 2 and 12, 2008, analyze the geographical distribution of viral communities in modern organosedimentary structures (sedimentary features, built by the interaction of organisms and their environment) known as microbialites, the living analogues of the oldest fossils on Earth, and come up with some surprising nuggets of information.
Biologists examining ecosystems similar to those that existed on Earth more than 3 billion years ago have made a surprising discovery: Viruses that infect bacteria are sometimes parochial and unrelated to their counterparts in other regions of the globe.
Hunting for traces of life on Mars calls for two radically different strategies. Of the two, we can most easily look for evidence for past life, preserved as fossil "biosignatures" in old rocks.
The origin of life lies in unique ocean reefs, and scientists from the University of Miami's Rosenstiel School of Marine & Atmospheric Science have developed an approach to help investigate them better.
LONDON (Reuters) - Rock formations in Western Australia may not only be some of the earliest evidence of life on Earth but also the first signs of biodiversity, scientists said on Wednesday.