Curiosity rover finds conditions once suited for ancient life on Mars
(Phys.org) —An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.
Earliest evidence of life found: 3.49 billion years ago
New evidence supporting theory of extraterrestrial impact found
An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, ...
Earth's oldest fossils boost hopes for life on Mars
(PhysOrg.com) -- Microfossils found in Australia show that more than 3.4 billion years ago, bacteria thrived on an Earth that had no oxygen, a finding that boosts hopes life has existed on Mars, a study published ...
Oldest fossils ever found may not be fossils after all
Test shows dinosaurs survived mass extinction by 700,000 years
University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.
Ancient volcano may have caused mass extinction
A previously unknown giant volcanic eruption that led to global mass extinction 260million years ago has been uncovered by scientists at the University of Leeds.
Origins of sulfur in rocks tells early oxygen story
(PhysOrg.com) -- Sedimentary rocks created more than 2.4 billion years ago sometimes have an unusual sulfur isotope composition thought to be caused by the action of ultra violet light on volcanically produced ...
Geologic Findings Undermine Theories of Permian Mass Extinction Timing
(PhysOrg.com) -- New scientific findings by geologist Robert Gastaldo of Colby College in Waterville, Maine, and colleagues call into question popular theories about the largest mass extinction in Earth's ...
Huge and widespread volcanic eruptions triggered the end-Triassic extinction
More than 200 million years ago, a massive extinction decimated 76 percent of marine and terrestrial species, marking the end of the Triassic period and the onset of the Jurassic. This devastating event cleared ...
Can we accurately model fluid flow in shale?
(Phys.org)—Given that over 20 trillion cubic meters of natural gas, a third of the United States' total reserves, are thought to be trapped in shale, and given the rush to exploit shale oil and gas resources ...
New test adds to scientists' understanding of Earth's history, resources
(Phys.org)—A new study co-authored by a University of Florida researcher provides the first direct chronological test of sequence stratigraphy, a powerful tool for exploring Earth's natural resources.
A 3.45-billion-year-old diet
Researchers are providing new information about the 'diet' of microorganisms on the early Earth. By studying 3.45-billion-year-old rocks, the team uncovered clues about ancient microbial metabolism.
After long-ago mass extinction, global warming hindered species' recovery
Researchers have discovered why plants and animals had a hard time recovering from the largest mass extinction in Earth's history 250 million years ago.