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Sciences & Technology
Veille sur les évolutions des sciences et des technologies
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Sciences pour Tous, site d'information scientifique

Sciences pour Tous, site d'information scientifique | Sciences & Technology | Scoop.it

Le magazine en ligne Sciences pour Tous ouvre un espace de rencontre avec ceux qui font la science à l’Université : publications scientifiques, portraits de chercheurs, reportages photo et articles "grand angle" pour faire dialoguer sciences et société.


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Origami unfolds a new world of shape-shifting electronics

Origami unfolds a new world of shape-shifting electronics | Sciences & Technology | Scoop.it
Researchers are using the geometry of paper folding to come up with futuristic antennas that can retract and compress.

 

When talking about the intersection of art and science, Stavros Georgakopoulos likes to quote Albert Einstein, who once said, "I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge."...

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The Illustris cosmological simulation projection

The Illustris cosmological simulation projection | Sciences & Technology | Scoop.it

"The Illustris project is a large cosmological simulation of galaxy formation, completed in late 2013, using a state of the art numerical code and a comprehensive physical model. Building on several years of effort by members of the collaboration, the Illustris simulation represents an unprecedented combination of high resolution, total volume, and physical fidelity. The About page contains detailed descriptions of the project, for both the general public and researchers in the field..."

Terheck's insight:

Cette nouvelle simulation numérique reproduit l’évolution de la matière et la formation des galaxies durant plus de 13 milliards d’années au sein d’un cube de 350 millions d’années-lumière de côté.

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Le carbone pyrolytique, c’est fantastique

Le carbone pyrolytique, c’est fantastique | Sciences & Technology | Scoop.it

Découvert l'existence d'une forme de carbone méconnue : le carbone pyrolytique. C'est un empilement de couches de graphène moins régulier que dans le graphite *.

 

Les propriétés de ce matériau sont vraiment étonnantes.


Via Goulu
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QUIZ: How Much Do YOU Know About Science?

QUIZ: How Much Do YOU Know About Science? | Sciences & Technology | Scoop.it

"Can You Pass The Science Quiz That Too Many Americans Failed?

 

Do Americans know their science? The results are in from a new National Science Foundation survey that assessed our knowledge of basic biology, chemistry, astronomy, geology, and physics -- and they don't look promising..."

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50 images scientifiques extraordinaires, le voyage continue !

50 images scientifiques extraordinaires, le voyage continue ! | Sciences & Technology | Scoop.it
La dernière sélection semble avoir plu, alors j'ai pris le temps de rassembler ici 50 nouvelles images extraordinaires, toujours en rapport avec la science. J'ai essayé de brouiller les pistes en faisant des transitions hasardeuses et en variant l...

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The Complete History of Science

The Complete History of Science (Full Documentary) . 2013

 

"This documentary as well as the rest of these documentaries shown here relate to important times and figures in history, historic places and people, archaeology, science, conspiracy theories, and education. The Topics of these video documentaries are varied and cover ancient history, Rome, Greece, Egypt, science, technology, nature, planet earth, the solar system, the universe, World wars, battles, military and combat technology, current events, education..."

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Lançons (enfin) le Reddit scientifique francophone !

Lançons (enfin) le Reddit scientifique francophone ! | Sciences & Technology | Scoop.it

"Reddit, c’est un réseau social. Encore un. Son principe est simple : on poste un lien, un court texte, une question. Pour s’orienter, il existe des « sous-reddits » (« subreddits ») par catégorie, par type de contenus partagés.[...]

Alors, Venez nombreux sur www.reddit.com/r/ScienceFr"


Via Audrey Bardon
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Anne Fleischman's curator insight, January 16, 12:50 PM

En voilà une belle initiatove, bravo! Et @sciencepresse y est...

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Scientists Reveal Shocking Effect Of Ultrasound On Your Brain

Scientists Reveal Shocking Effect Of Ultrasound On Your Brain | Sciences & Technology | Scoop.it
Ultrasound may improve sensory perception, according to a new study in humans. By directing ultrasound to a specific brain area, researchers were able to improve people's ability to discriminate between sensory inputs.
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Polynesians May Have Invented Binary Math 600 Years Ago

Polynesians May Have Invented Binary Math 600 Years Ago | Sciences & Technology | Scoop.it

"How old is the binary number system? Perhaps far older than the invention of computers or even the invention of binary math in the West. The residents of a tiny Polynesian island may have been doing calculations in binary—a number system with only two digits—centuries before it was described by Gottfried Leibniz, the co-inventor of calculus, in 1703..."

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Blagues à caractère scientifique : les plus courtes sont les meilleures

Blagues à caractère scientifique : les plus courtes sont les meilleures | Sciences & Technology | Scoop.it
"Il y a trois sortes de blogueurs scientifiques : ceux qui savent compter et ceux qui ne savent pas compter" explique Idées de physique, et tac, ça c’est de la blague scientifique courte… Lire la suite → Continue reading →...

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La France a, plus que jamais, besoin de scientifiques et techniciens

TECHNO - Connaître les risques et permettre un débat citoyen et public sur les enjeux des sciences et techniques est une bonne chose. Il n'y a pas pire obscurantiste que celui qui voudrait imposer le fait scientifique par un acte d'autorité.
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To clean the air, Dutch scientists invent pavement that eats smog

To clean the air, Dutch scientists invent pavement that eats smog | Sciences & Technology | Scoop.it

"

What if the solution to smog was right where the rubber meets the road?

 

Scientists in the Netherlands have found that installing special air-purifying pavement on city streets can cut air pollution nearly in half..."

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25 Interesting STEM Experts Worth Following On Twitter

25 Interesting STEM Experts Worth Following On Twitter | Sciences & Technology | Scoop.it
Whether you’re a science teacher or not, education and the STEM subjects is a hot topic these days. From discussions about comparing test scores in STEM subjects with students around the globe to tracking the number of STEM based jobs and future graduates, there’s certainly a lot to discuss. There’s a lot of information out …
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Généalogie : ce GPS retrouve l'origine de votre ADN et de vos ancêtres

Généalogie : ce GPS retrouve l'origine de votre ADN et de vos ancêtres | Sciences & Technology | Scoop.it

"Une équipe de scientifiques vient de créer un nouvel outil GPS capable de retracer l'histoire de votre ADN jusqu'à sa région d'origine. Vous n'avez besoin que d'un kit ADN avant de rentrer vos résultats sur le site. Un modèle information déterminera ensuite où votre ADN s'est formé, il y a 1.000 ans..."

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La culture scientifique : ça sert à quoi?

La culture scientifique : ça sert à quoi? | Sciences & Technology | Scoop.it

"Être scientifiquement cultivé, ce n'est pas seulement avoir des connaissances sur la science, mais aussi sur la façon de penser en science."

Source : Agence Science.Presse.

Auteur : Sophie Malavoy, directrice du Cœur des sciences – UQAM

 

"Depuis des années, je me pose la même question, une question toute simple, toute bête diront certains: à quoi sert la culture scientifique que nous nous efforçons tous de diffuser ? Qu’avons-nous vraiment à apporter en tant que communicateurs scientifiques ?..."

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Le CNRS lance un site d'information pour le grand public

Le CNRS lance un site d'information pour le grand public | Sciences & Technology | Scoop.it

"(AFP) - Le CNRS, principal organisme public de recherche français, lance ce mardi un site internet d'information scientifique gratuit destiné au grand public (http://lejournal.cnrs.fr) pour "donner du sens à la science"..."

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Comment vulgariser la science autrement? 

Comment vulgariser la science autrement?  | Sciences & Technology | Scoop.it

"Avec Marion Montaigne (illustratrice et auteur de bandes dessinées, auteur d'un blog humoristique de vulgarisation scientifique intitulé : Tu mourras moins bête (mais tu mourras quand même et Julien Bobroff, physicien, créateur du site Vulgarisation.fr"


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Fantastic Voyage: Nanomotors are inserted and controlled, for the first time, inside living cells

Fantastic Voyage: Nanomotors are inserted and controlled, for the first time, inside living cells | Sciences & Technology | Scoop.it

For the first time anywhere, a team of chemists and engineers at Penn State has placed tiny synthetic motors inside live human cells, propelled them with ultrasonic waves and steered them magnetically. It's not exactly "Fantastic Voyage," but it's close. The nanomotors, which are rocket-shaped metal particles, move around inside the cells, spinning and battering against the cell membrane.

 

"As these nanomotors move around and bump into structures inside the cells, the live cells show internal mechanical responses that no one has seen before," said Tom Mallouk, Evan Pugh Professor of Materials Chemistry and Physics. "This research is a vivid demonstration that it may be possible to use synthetic nanomotors to study cell biology in new ways. We might be able to use nanomotors to treat cancer and other diseases by mechanically manipulating cells from the inside. Nanomotors could perform intracellular surgery and deliver drugs noninvasively to living tissues."

 

Up until now, Mallouk said, nanomotors have been studied only "in vitro" in a laboratory apparatus, not in living human cells. Chemically powered nanomotors were first developed 10 years ago at Penn State by a team that included chemist Ayusman Sen and physicist Vincent Crespi, in addition to Mallouk.

 

"Our first-generation motors required toxic fuels and they would not move in biological fluid, so we couldn't study them in human cells," Mallouk said. "That limitation was a serious problem." When Mallouk and French physicist Mauricio Hoyos discovered that nanomotors could be powered by ultrasonic waves, the door was open to studying the motors in living systems.

 


Via Dr. Stefan Gruenwald, Lynnette Van Dyke
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Ces gènes que Néandertal nous a légués

Ces gènes que Néandertal nous a légués | Sciences & Technology | Scoop.it
Selon des études, si sur le plan individuel, l'héritage de Néandertal ne dépasse pas 3 % de nos gènes, au total 20 % du génome de l'homme de Néandertal subsisterait éparpillé dans l'ADN des populations modernes.
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10 Innovative Ways to Bring STEM to Schools

10 Innovative Ways to Bring STEM to Schools | Sciences & Technology | Scoop.it
As schools look for innovative ways to bring in STEM learning, here's a possible road map for how to galvanize a school community.

Via Ileane Smith
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La carte corporelle de nos émotions révélée par une étude

La carte corporelle de nos émotions révélée par une étude | Sciences & Technology | Scoop.it
Des scientifiques finlandais ont cartographié les zones de notre corps qui connaissent une augmentation ou une diminution de l'activité sensorielle lorsque nous éprouvons telle ou telle émotion.

Via LeJournaldelaScience
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Gust MEES's curator insight, January 6, 9:44 AM

 

Très intéressant...

 

pascal leclerc's curator insight, January 8, 12:19 PM

Chaque type d’émotion active un réseau de zones corporelles spécifique, bien distinct de ceux activés par d'autres types d'émotions. Very interesting !

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What You'd See If Cell Phone Radiation Were Visible

What You'd See If Cell Phone Radiation Were Visible | Sciences & Technology | Scoop.it
What would the world look like if you could see cell phone radiation? Artist Nickolay Lamm has tried to answer that question.
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Botox et tétanos, un étonnant cocktail pour… soigner la douleur

Botox et tétanos, un étonnant cocktail pour… soigner la douleur | Sciences & Technology | Scoop.it
Botox et tétanos, un étonnant cocktail pour… soigner la douleur
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'Higgsogenesis' proposed to explain dark matter

'Higgsogenesis' proposed to explain dark matter | Sciences & Technology | Scoop.it
Interactions of Higgs bosons and anti-Higgs in early Universe may also have caused asymmetry between matter and antimatter.

[...] Two physicists suggest that the Higgs had a key role in the early Universe, producing the observed difference between the number of matter and antimatter particles and determining the density of the mysterious dark matter that makes up five-sixths of the matter in the Universe.

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