science

3 articles1 7 jours 30 90 2018 Tout
20-03-2019 reporterre.net 13 min #153666

Des scientifiques mettent en cause leur empreinte écologique

L'origine anthropique du réchauffement climatique ne fait plus de doute au sein de la communauté scientifique, qui la documente jour après jour. Cependant, les chercheurs, grands voyageurs, contribuent aussi aux émissions de gaz à effet de serre. Certains ont décidé de modifier leurs pratiques pour réduire leurs émissions.

Depuis les années 1980, la communauté scientifique sonne le tocsin de l'urgence climatique et environnementale.

19-03-2019 sciencenews.org 7 min #153638

People can sense Earth's magnetic field, brain waves suggest

A new analysis of people's brain waves when surrounded by different magnetic fields suggests that people have a "sixth sense" for magnetism.

Birds, fish and some  other creatures can sense Earth's magnetic field and use it for navigation (SN: 6/14/14, p. 10). Scientists have long wondered whether humans, too, boast this kind of magnetoreception.

19-03-2019 technologyreview.com 6 min #153631

A quantum experiment suggests there's no such thing as objective reality

Physicists have long suspected that quantum mechanics allows two observers to experience different, conflicting realities. Now they've performed the first experiment that proves it.

by Emerging Technology from the arXiv March 12, 2019

Back in 1961, the Nobel Prize-winning physicist Eugene Wigner outlined a thought experiment that demonstrated one of the lesser-known paradoxes of quantum mechanics.