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ScienceDaily: Earth & Climate News |
| Possible chemical leftovers from early Earth sit near the core Posted: 30 Dec 2021 10:09 AM PST Down near the Earth's core, there are zones where seismic waves slow to a crawl. New research finds that these enigmatic and descriptively-named ultra-low velocity zones are surprisingly layered. Modeling suggests that it's possible some of these zones are leftovers from the processes that shaped the early Earth -- remnants of incomplete mixing like clumps of flour in the bottom of a bowl of batter. |
| Safer carbon capture and storage Posted: 29 Dec 2021 10:35 AM PST Atmospheric carbon dioxide (CO2) levels have increased significantly over the last 50 years, resulting in higher global temperatures and abrupt changes to Earth's climate. Carbon capture and storage (CCS) is one of the new technologies that scientists hope will play an important role in tackling the climate crisis. It involves the capture of CO2 from emissions from industrial processes, or from the burning of fossil fuels in power generation, which is then stored underground in geological formations. CCS will also be key if we want to produce 'clean-burning' hydrogen from hydrocarbon systems. |
| Nits on ancient mummies shed light on South American ancestry Posted: 28 Dec 2021 07:08 PM PST For the first time, scientists have recovered ancient human DNA from the sticky glue head lice use to attach their eggs to their host's hair. The new technique was trialled on mummified remains and the DNA has revealed clues about how the people died and the movements of populations thousands of years ago. |
| From the oilfield to the lab: How a special microbe turns oil into gases Posted: 22 Dec 2021 12:27 PM PST Microorganisms can convert oil into natural gas, i.e. methane. Until recently, it was thought that this conversion was only possible through the cooperation of different organisms. In 2019, a researcher suggested that a special archaeon can do this all by itself, as indicated by their genome analyses. Now, researchers have succeeded in cultivating this 'miracle microbe' in the laboratory. This enabled them to describe exactly how the microbe achieves the transformation. They also discovered that it prefers to eat rather bulky chunks of food. |
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