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<�� Certaines argiles martiennes sont d'origine magmatique

vendredi 10 juillet 2020 — Espace

La présence d'argiles à la surface de Mars est considérée comme la preuve que de l'eau liquide y a circulé en quantité il y a plus de 3.5 milliards d'années. Ces minéraux se forment en effet...

Techno-sciences

Polynesians and Native South Americans Made 12th-Century Contact

vendredi 10 juillet 2020 par Christopher Intagliata — The Sciences, Evolution

Scientists have found snippets of Native South American DNA in the genomes of present-day Polynesians, and they trace the contact to the year 1150. Christopher Intagliata reports. -- Read more on ScientificAmerican.com

Scientific American

Structural basis for RIFIN-mediated activation of LILRB1 in malaria

vendredi 10 juillet 2020 par Thomas E. Harrison, Alexander M. Mørch, James H. Felce, Akihito Sakoguchi, Adam J. Reid, Hisashi Arase, Michael L. Dustin, Matthew K. Higgins

Nature, Published online: 10 July 2020; doi:10.1038/s41586-020-2530-3Structural basis for RIFIN-mediated activation of LILRB1 in malaria

Nature

Scientists call for pandemic investigations to focus on wildlife trade

vendredi 10 juillet 2020 par Smriti Mallapaty

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-02052-7The World Health Organization is sending scientists to China this weekend to investigate the origins of the COVID-19 outbreak.

Nature

Daily briefing: Spain begins an epic economics experiment in universal basic income

vendredi 10 juillet 2020 par Flora Graham

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-02088-9Spain launches the largest test yet of no-strings-attached income — but it’s not truly universal. Plus: how group testing could transform the hunt for coronavirus cases, and PhD students in Australia face financial (...)

Nature

Pandemic speeds largest test yet of universal basic income

vendredi 10 juillet 2020 par Carrie Arnold

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-01993-3Economists welcome the chance to see whether giving people cash to spend however they choose improves livelihoods.

Nature

Cities — try to predict superspreading hotspots for COVID-19

vendredi 10 juillet 2020 par Roland Bouffanais, Sun Sun Lim

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-02072-3Tracking how people move around urban areas can pinpoint where disease might transmit fastest and farthest.

Nature

The mathematical strategy that could transform coronavirus testing

vendredi 10 juillet 2020 par Smriti Mallapaty

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-02053-6Four charts show how pooling samples from many people can save time or resources.

Nature

Massive coronavirus outbreak strikes iconic Californian prison after it rejected expert aid

vendredi 10 juillet 2020 par Noah Baker, Amy Maxmen, Benjamin Thompson

Nature, Published online: 10 July 2020; doi:10.1038/d41586-020-02093-ySan Quentin prison faces the third-largest outbreak in the United States. Legal pressure builds as one in three inmates is infected.

Nature

<�� Derrière le phénomène des "eaux-mortes"

jeudi 9 juillet 2020 — Physique

Des bateaux mystérieusement freinés, voire stoppés, dans leur course bien que leurs moteurs fonctionnent parfaitement. Ce sont les "eaux-mortes", observées pour la première fois en 1893, et...

Techno-sciences