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Categories: Anthropology: Cultures, Geoscience: Geography
Published Tiny mineral inclusions picture the chemical exchange between Earth's mantle and atmosphere
(via sciencedaily.com) Original source Using synchrotron techniques, scientists have unveiled important information on The Great Oxidation Event by studying apatite inclusions in zircon crystals from old magmas.
Published Arctic soil methane consumption may be larger than previously thought and increases in a drier climate
(via sciencedaily.com) Original source A recent study finds that Arctic soil methane uptake may be larger than previously thought, and that methane uptake increases under dry conditions and with availability of labile carbon substrates.
Published Coastal fisheries show surprising resilience to marine heat waves
(via sciencedaily.com) New research found that marine heat waves -- prolonged periods of unusually warm ocean temperatures -- haven't had a lasting effect on the fish communities that feed most of the world. The finding is in stark contrast to the devastating effects seen on other marine ecosystems cataloged by scientists after similar periods of warming, including widespread coral bleaching and harmful algal blooms.
Published Using evidence from last Ice Age, scientists predict effects of rising seas on coastal habitats
(via sciencedaily.com) Original source The rapid sea level rise and resulting retreat of coastal habitat seen at the end of the last Ice Age could repeat itself if global average temperatures rise beyond certain levels, according to an analysis by an international team of scientists.
Published Unveiling global warming's impact on daily precipitation with deep learning
(via sciencedaily.com) Original source A research team has conclusively demonstrated that global warming stands as primary driver behind the recent increase in heavy rainfall and heatwaves using deep learning convolutional neural network.
Published Rare 14-ft smalltooth sand tiger shark washes up on Irish coast
(via sciencedaily.com) Original source Scientists believe a huge 14ft smalltooth sand tiger shark, which washed up at Kilmore Quay, Co. Wexford, earlier this year, represents the first of its species to have been found in Ireland's waters. Two other individuals of the same species also washed up on the UK coastline, suggesting this species' geographic range has shifted. The scientists believe these rare finds may offer a window into the future, with more and more species traditionally confined to more tropical waters expected to visit Irish and British waters.
Published Enhanced chemical weathering: A solution to the climate crisis?
(via sciencedaily.com) Original source Could blending of crushed rock with arable soil lower global temperatures? Researchers study global warming events from 40 and 56 million years ago to find answers.
Published Historic red tide event of 2020 fueled by plankton super swimmers
(via sciencedaily.com) Original source A major red tide event occurred in waters off Southern California in the spring of 2020, resulting in dazzling displays of bioluminescence along the coast. Now, for the first time, a study has pinpointed how the plankton species Lingulodinium polyedra -- a dinoflagellate -- was able to create such an exceptionally dense bloom. The answer lies in dinoflagellates' remarkable ability to swim, which lends them a competitive advantage over other species of phytoplankton.
Published Past abrupt changes in North Atlantic Overturning have impacted the climate system across the globe
(via sciencedaily.com) Original source Abrupt climate changes have affected rainfall patterns worldwide in the past, especially in the tropical monsoon region, a new study shows. An international team of scientists used dripstones from globally distributed caves together with model simulations to analyze the global impacts of rapid Northern-Hemisphere temperature increases, the widely studied Dansgaard-Oeschger events, that repeatedly occurred during the last ice age. The comparison of stalagmite and model data shows in unprecedented detail how these abrupt changes and the associated modifications of the Atlantic overturning circulation, AMOC for short, have affected global atmospheric circulation.
Published Malaysian rock art found to depict elite -- Indigenous conflict
(via sciencedaily.com) Original source Researchers have dated drawings of Gua Sireh Cave in Sarawak, uncovering a sad story of conflict in the process.
Published Spear thrower weapon use by prehistoric females equalized the division of labor while hunting
(via sciencedaily.com) Original source A new study has demonstrated that the atlatl (i.e. spear thrower) functions as an 'equalizer', a finding which supports women's potential active role as prehistoric hunters.
Published Ancient metal cauldrons give us clues about what people ate in the Bronze Age
(via sciencedaily.com) Original source Archaeologists have long been drawing conclusions about how ancient tools were used by the people who crafted them based on written records and context clues. But with dietary practices, they have had to make assumptions about what was eaten and how it was prepared. A new study analyzed protein residues from ancient cooking cauldrons and found that the people of Caucasus ate deer, sheep, goats, and members of the cow family during the Maykop period (3700--2900 BCE).
Published Unveiling Japan's ancient practice of cranial modification: The case of the Hirota people in Tanegashima
(via sciencedaily.com) Original source Cranial modification is a form of body alteration where the head is pressed or bound to permanently deform the skull. The practice has been reported across various cultures throughout history. Researchers report that the Hirota people -- who lived on the southern Japanese island of Tanegashima between the 3rd to 7th century CE -- also conducted cranial modification, with indication that both males and females performed the practice.
Published New research links early Europeans' cultural and genetic development over several thousand years
(via sciencedaily.com) Original source A new DNA study has nuanced the picture of how different groups intermingled during the European Stone Age, but also how certain groups of people were actually isolated. Researchers produced new genetic data from 56 Central and Eastern European individuals from the Stone Age.
Published New insights into the origin of the Indo-European languages
(via sciencedaily.com) Original source An international team of linguists and geneticists has achieved a significant breakthrough in our understanding of the origins of Indo-European, a family of languages spoken by nearly half of the world's population.
Published Giant stone artefacts found on rare Ice Age site in Kent, UK
(via sciencedaily.com) Original source Researchers have discovered some of the largest early prehistoric stone tools in Britain.
Published Mountains vulnerable to extreme rain from climate change
(via sciencedaily.com) Original source A new study finds that as rising global temperatures shift snow to rain, mountains across the Northern Hemisphere will be hotspots for extreme rainfall events that could trigger floods and landslides -- potentially impacting a quarter of the world's population.
Published There may be good news about the oceans in a globally warmed world
(via sciencedaily.com) Original source An analysis of oxygen levels in Earth's oceans may provide some rare, good news about the health of the seas in a future, globally warmed world. A study analyzing ocean sediment shows that ocean oxygen levels in a key area were higher during the Miocene warm period, some 16 million years ago when the Earth's temperature was hotter than it is today.
Published This self-driving boat maps underwater terrain
(via sciencedaily.com) Original source Engineers concoct an easier way for scientists to study underwater topography.
Published Freely available risk model for hurricanes, tropical cyclones
(via sciencedaily.com) Original source As human-driven climate change amplifies natural disasters, hurricanes and typhoons stand to increase in intensity. Until now, there existed very few freely available computer models designed to estimate the economic costs of such events, but a team of researchers has recently announced the completion of an open-source model that stands to help countries with high tropical cyclone risks better calculate just how much those storms will impact their people and their economies.