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ScienceDaily: Fossils & Ruins News |
| Archaeological dig reveals participants in California’s Gold Rush dined on salted Atlantic cod Posted: 06 Jan 2022 11:36 AM PST An excavation at Thompson's Cove in San Francisco shows 'Atlantic cod were imported during the 1850s, likely as a (largely) deboned, dried and salted product from the East Coast of the United States.' The analysis underscores the importance of global maritime trade in northern California during the Gold Rush. |
| Microbes produce oxygen in the dark Posted: 06 Jan 2022 11:36 AM PST It is common knowledge that there would be no oxygen on Earth were it not for sunlight; the key component in photosynthesis. Now researchers have made the surprising discovery that oxygen is also produced without sunlight, possibly deep below the ocean surface. |
| Fossil research affected by significant colonial bias Posted: 06 Jan 2022 07:59 AM PST The fossil record, which documents the history of life on Earth, is heavily biased by influences such as colonialism, history and global economics, palaeontologists argue. |
| New research questions ‘whiff of oxygen’ in Earth’s early history Posted: 05 Jan 2022 12:13 PM PST A reexamination of Earth's famous 'whiff of oxygen' has the potential to rewrite early accounts of the planet's history by finding that atmospheric oxygen actually did not exist prior to the Great Oxygenation Event (GOE). |
| Modern humans developed a more effective protection against oxidative stress Posted: 05 Jan 2022 12:13 PM PST Very few proteins in the body have a change that makes them unique compared to the corresponding proteins in Neanderthals and apes. Researchers have now studied one such protein, glutathione reductase, which protects against oxidative stress. They show that the risk for inflammatory bowel disease and vascular disease is increased several times in people carrying the Neanderthal variant. |
| New research shows gene exchange between viruses and hosts drives evolution Posted: 05 Jan 2022 08:14 AM PST The first comprehensive analysis of viral horizontal gene transfer (HGT) illustrates the extent to which viruses pick up genes from their hosts to hone their infection process, while at the same time hosts also co-opt useful viral genes. |
| Ancient Maya lessons on surviving drought Posted: 05 Jan 2022 06:45 AM PST A new study casts doubt on drought as the driver of ancient Mayan civilization collapse. |
| Study reveals more hostile conditions on Earth as life evolved Posted: 04 Jan 2022 04:25 PM PST During long portions of the past 2.4 billion years, the Earth may have been more 'inhospitable' to life than scientists previously thought, according to new computer simulations. Using a state-of-the-art climate model, researchers now believe the level of ultraviolet (UV) radiation reaching the Earth's surface could have been underestimated, with UV levels being up to ten times higher. |
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