Royal Society exhibition revives 18th-century debate about shape of the Earth
“_Some members of the French Academy of Sciences interpreted measurements taken in Paris by scientists including Jacques Cassini as supporting the idea that the Earth was elongated at the poles, resembling a lemon or a melon.
By contrast, Isaac Newton had proposed that the centrifugal force caused by the Earth’s rotation would result in the planet being flattened at its poles, thus having a similar shape to an orange._”
Ancient Egyptian scribes and specific skeletal occupational risk markers (Abusir, Old Kingdom)
“Our research reveals that remaining in a cross-legged sitting or kneeling position for extended periods, and the repetitive tasks related to writing and the adjusting of the rush pens during scribal activity, caused the extreme overloading of the jaw, neck and shoulder regions.”
Brukner Havelková, P., Dulíková, V., Bejdová, Š. et al. Ancient Egyptian scribes and specific skeletal occupational risk markers (Abusir, Old Kingdom). Sci Rep 14, 13317 (2024). https://doi.org/10.1038/s41598-024-63549-z
Ancient DNA sheds light on the genetic origins of early Iron Age Philistines
“Our analysis suggests that this genetic distinction is due to a European-related gene flow introduced in Ashkelon during either the end of the Bronze Age or the beginning of the Iron Age. This timing is in accord with estimates of the Philistines arrival to the coast of the Levant, based on archeological and textual records (2–4).”
Michal Feldman et al., Ancient DNA sheds light on the genetic origins of early Iron Age Philistines. Sci. Adv.5, eaax0061 (2019). DOI: https://doi.org/10.1126/sciadv.aax0061
Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations
“The Arabian Peninsula was the initial site of the out-of-Africa migrations that occurred between 125,000 and 60,000 yr ago, leading to the hypothesis that the first Eurasian populations were established on the Peninsula and that contemporary indigenous Arabs are direct descendants of these ancient peoples.”
Rodriguez-Flores, J.L. et al. (2016) ‘Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations,’ Genome Research, 26(2), pp. 151–162. https://doi.org/10.1101/gr.191478.115.
Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations
“The Arabian Peninsula was the initial site of the out-of-Africa migrations that occurred between 125,000 and 60,000 yr ago, leading to the hypothesis that the first Eurasian populations were established on the Peninsula and that contemporary indigenous Arabs are direct descendants of these ancient peoples.”
Rodriguez-Flores, J.L. et al. (2016) ‘Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations,’ Genome Research, 26(2), pp. 151–162. https://doi.org/10.1101/gr.191478.115.
Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations
“_ The Arabian Peninsula was the initial site of the out-of-Africa migrations that occurred between 125,000 and 60,000 yr ago, leading to the hypothesis that the first Eurasian populations were established on the Peninsula and that contemporary indigenous Arabs are direct descendants of these ancient peoples._”
Rodriguez-Flores, J.L. et al. (2016) ‘Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations,’ Genome Research, 26(2), pp. 151–162. https://doi.org/10.1101/gr.191478.115.
In the tradition of Elizabeth Kolbert and Michael Pollan, The Nature of Our Cities is a stirring exploration of how innovators from around the world are combining urban nature with emerging technologies, protecting the planet’s cities from the effects of climate change and safeguarding the health of their inhabitants.
Late Neolithic collective burial reveals admixture dynamics during the third millennium BCE and the shaping of the European genome
“To conclude, our study of a Late Neolithic burial enables direct, quasi–real-time observation of the trimodal admixture processes in Europe between 3300 and 2600 cal BCE as steppe ancestry people dispersed and mixed with local Neo-ancestry groups or individuals. The generalization of the results obtained from our data suggests that this genomic transformation took place during a period of profound cultural change.”
Oğuzhan Parasayan et al., Late Neolithic collective burial reveals admixture dynamics during the third millennium BCE and the shaping of the European genome. Sci. Adv.10, eadl2468(2024). DOI: https://doi.org/10.1126/sciadv.adl2468
How Many Moons Does the Earth Have?: The Ultimate Science Quiz Book by Brian Clegg, 2015
Test your knowledge to the limit with a sizzling collection of brain-stretching, science-based questions in two eight-round quizzes. Turn the page to get the answer immediately – and as each answer page explores the subject in more depth, this the only quiz that's just as entertaining to read from beginning to end as it is to play competitively.
“For a process that’s anything but exotic, ice nucleation remains surprisingly mysterious. Chemists can’t reliably predict the effect of a given impurity or surface, let alone design one to hinder or promote ice formation. But they’re chipping away at the problem.”
#Books | 📚 Dans l’#univers, tout est une question de point de vue : observer le mouvement des astres depuis différents points du #cosmos
permet de mieux comprendre ses mécanismes cachés. Alors, êtes-vous prêts à changer de perspective ?
#Books | 📚
Ce livre dresse un bilan scientifique et technique complet des moteurs #diesel (et autres moteurs thermiques) : impacts toxiques sur la santé publique et l'#environnement, mais aussi les solutions de #dépollution et les alternatives.
➡️ Plus d’infos: https://bit.ly/3xZ721K
The potential of lacustrine sedimentary ancient DNA for revealing human postglacial recolonization patterns in northern Sweden – a review
“The questions of who the first postglacial peoples, or pioneers, were and where they came from therefore remain unanswered. Previous palaeogenomic analyses from remains from adjacent regions have suggested that two main routes into Sweden could have been taken by the pioneers, one from the SW through modern-day Denmark and Norway, and one from the east via Finland. However, no direct genetic evidence from the pioneers of northern Sweden exists.”
Johnson, E., Regnéll, C., Heintzman, P.D. and Linderholm, A. (2024), The potential of lacustrine sedimentary ancient DNA for revealing human postglacial recolonization patterns in northern Sweden – a review. Boreas. https://doi.org/10.1111/bor.12660