De Natura Rerum
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L'écovillage bâti à l'envers qui veut remettre le monde à l'endroit

L'écovillage bâti à l'envers qui veut remettre le monde à l'endroit | De Natura Rerum | Scoop.it

Au Hameau des Buis, au cœur de l’Ardèche, se joue depuis dix ans une aventure humaine peu ordinaire. Autour d’une école à la pédagogie innovante s’est construit un écovillage, rassemblant ceux qui veulent vivre différemment, en conjuguant acquis de la modernité et sobriété écologique. Sur ce lieu, des maisons bioclimatiques, bâties avec des matériaux écologiques et locaux, ont vu le jour.
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Via Amandine UHMANN, Build Green, Frédéric Liégeois
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..... En 2007, la première famille emménage. Et découvre ce qu’est une maison bioclimatique : nul besoin, ou presque, de chauffage en hiver ni de climatisation en été. L’orientation des baies vitrées, l’isolation thermique et phonique, la superposition de pierres et des vitres, aidée par l’ombre de la végétation en été, leur permet « de se défendre toute seule ». Résultat, selon Laurent Bouquet : les habitations consomment en énergie (électricité, chauffage au bois…) moins de 40 kwh/m2, soit quatre fois moins que la consommation moyenne [1] ! Une économie d’argent pour les résidents, une économie de CO2 pour l’atmosphère, une économie énergétique pour le pays.

 

...  Pour demeurer ouvert au monde qui l’entoure, le « hameau global et solidaire » dispense des formations en écoconstruction ou en création d’écovillage (voir son site). Cette « communauté de conscience » essaimera-t-elle au-delà des collines ardéchoises ? « Le principal facteur d’échecs, c’est nous-mêmes », philosophe Laurent. Reste qu’ériger les écovillages en modèle est loin d’être une évidence pour bien des gens… Et pour de nombreux et puissants intérêts privés.

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Divided island: How Haiti and the DR became two worlds

Haiti and the Dominican Republic share a border, and an island. But the two countries are very different today: the Dominican Republic enjoys higher quality of life for many factors than Haiti. I went to this island and visited both countries, to try and understand when and how their paths diverged.

Via Seth Dixon
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Seth Dixon's curator insight, October 23, 3:14 PM

This video is an exciting debut for the new series "Vox borders."  By just about every development metric available, the Dominican Republic is doing better than Haiti, the only bordering country on the Caribbean island of Hispaniola with the DR.   

 

Questions to Ponder: How does the border impact both countries?  How has sharing one island with different colonial legacies shaped migrational push and pull factors?

 

Tags: Haiti, Dominican Republic, video, poverty, development, economic, labor, migration, political, borders.

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Mettre la nature sous cloche, une fausse bonne idée

Mettre la nature sous cloche, une fausse bonne idée | De Natura Rerum | Scoop.it
Les environnements artificiels fleurissent un peu partout dans les grandes villes. Mais est-ce vraiment la bonne manière de répondre aux menaces environnementales ?

Via Bernadette Cassel
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Katell Rochard's curator insight, November 16, 4:33 PM
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Stunning drone footage of Iceland's scenic landscape

Stunning drone footage of Iceland's scenic landscape | De Natura Rerum | Scoop.it
In a five-minute long video shot in Iceland and titled the North Awakens, viewers are taken on a breathtaking flight over a mix of terrain.

Via Mariaschnee
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Logjam: Inside Madagascar’s illegal-rosewood stockpiles

Logjam: Inside Madagascar’s illegal-rosewood stockpiles | De Natura Rerum | Scoop.it
ANTALAHA, Madagascar — The piles of rosewood logs outside Chantal Rasoanirina’s office filled more than half the courtyard to head height. Each log, wet and weathered, was marked with a…
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Counting logs The log counting began in 2010, “one by one,” according to Ratsimbazafy, who interviewed more than 200 people to compile the TRAFFIC report. “There wasn’t really a decision to adopt a method, like, ‘For rosewood in Madagascar, this is the way we’re going to count.’ It depends on the context, on who’s leading the inventory — on who’s there on the trip.”
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Lake Nyos

Lake Nyos | De Natura Rerum | Scoop.it
Known locally as “the Bad Lake,” Lake Nyos, located in the Northwest Region of Cameroon, Africa, carried a folklore of danger, and tales were spoken of an evil spirit which emerged from the lake to kill all those who lived near it. This legend contained the memory of a very real threat.

Lake Nyos was formed in a volcanic crater created as recently as 400 years ago. Crater lakes commonly have high levels of CO2 as they are formed by the volcanic activity happening miles beneath them. Under normal circumstances this gas is released over time as the lake water turns over.

But Lake Nyos was different: an unusually still lake, with little in the way of environmental agitation. Rather than releasing the gas, the lake was acting as a high-pressure storage unit. Its deep waters were becoming ever more loaded with gas until more than five gallons of CO2 were dissolved in every gallon of water. Pressurized to the physical limit, Lake Nyos was a time bomb.

Via Mariaschnee
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Sheep are able to recognize human faces from photographs

Sheep are able to recognize human faces from photographs | De Natura Rerum | Scoop.it
The study, published today in the journal Royal Society: Open Science, is part a series of tests given to the sheep to monitor their cognitive abilities. Because of the relatively large size of their brains and their longevity, sheep are a good animal model for studying neurodegenerative disorders such as Huntington's disease.

The ability to recognise faces is one of the most important human social skills. We recognise familiar faces easily, and can identify unfamiliar faces from repeatedly presented images. As with some other animals such as dogs and monkeys, sheep are social animals that can recognise other sheep as well as familiar humans. Little is known, however, about their overall ability to process faces.

Via Mariaschnee
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Goodall’s findings confirmed: chimps have stable personalities

Decades after she was told to ignore her findings, Jane Goodall’s insight into chimps has been confirmed by 40 years of data. Stephen Fleischfresser reports.
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HISTOIRES D'ARBRES - EP1 - Les maîtres de l’eau - EXTRAIT

Épisode 1 : Les maîtres de l’eau (arbre source de vie) : frères de sève, le platane de l’île de Peilz en Suisse et le Geroplatanos en Grèce grandissent tou
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Mud from the Greenlandic seabed reveals a hidden past

Mud from the Greenlandic seabed reveals a hidden past | De Natura Rerum | Scoop.it
Satellite data and climate measurements spanning the last few decades are a treasure trove of information for scientists studying the Greenland Ice Sheet.

Via Mariaschnee
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VIDEO. Floride : un pêcheur sauve un iguane perdu à 7 kilomètres des côtes

VIDEO. Floride : un pêcheur sauve un iguane perdu à 7 kilomètres des côtes | De Natura Rerum | Scoop.it
Mais que faisait ce reptile aussi loin en mer ? Selon son sauveur, il aurait pu être emporté par la marée. 

Via Hubert MESSMER @Zehub on Twitter
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Whales and dolphins have rich 'human-like' cultures and societies

Whales and dolphins have rich 'human-like' cultures and societies | De Natura Rerum | Scoop.it
Whales and dolphins (Cetaceans) live in tightly-knit social groups, have complex relationships, talk to each other and even have regional dialects - much like human societies.

A major new study, published today in Nature Ecology & Evolution, has linked the complexity of Cetacean culture and behaviour to the size of their brains.

The research was a collaboration between scientists at The University of Manchester, The University of British Columbia, Canada, The London School of Economics and Political Science (LSE) and Stanford University, United States.

The study is first of its kind to create a large dataset of cetacean brain size and social behaviours. The team compiled information on 90 different species of dolphins, whales, and porpoises. It found overwhelming evidence that Cetaceans have sophisticated social and cooperative behaviour traits, similar to many found in human culture.

The study demonstrates that these societal and cultural characteristics are linked with brain size and brain expansion—also known as encephalisation.

Via Mariaschnee
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We can finally map the spiral arm on the far side of the galaxy

We can finally map the spiral arm on the far side of the galaxy | De Natura Rerum | Scoop.it
Using a jet of radio waves, astronomers have begun to map the other side of the Milky Way. Within 10 years we could have a complete map of the entire galaxy

Via Mariaschnee
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Discovering the Magic of the Reunion Island by Check My Dream

Discovering the Magic of the Reunion Island by Check My Dream | De Natura Rerum | Scoop.it
Le photographe, qui se cache sous le nom de Check My Dream, est originaire du Sud-Ouest de la France. Il nous offre de magnifiques clichés dévoilant la beaut�

Via Mariaschnee
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Impacts psycho-sociaux des espaces verts dans les espaces urbains

Impacts psycho-sociaux des espaces verts dans les espaces urbains | De Natura Rerum | Scoop.it
L’évolution écologisante de la réglementation en urbanisme depuis le début des années 2000 (SRU, AEU, Grenelle 1 et 2) a permis une (ré)introduction de la Nature dans les Villes et le développement de l’écologie urbaine. Est-ce que cela est suffisant pour construire des Cités Vertes ? À notre sens, la réponse est négative. Pour répondre à l’enjeu d’urbanisme durable, il convient d’intégrer au volet environnemental, un volet sociétal. Cet article propose un premier cadre de définition du volet sociétal de l’urbanisme de demain, vu par les habitants et les usagers des espaces urbains, en s’appuyant sur une première synthèse bibliographique exploratoire sur les « Bienfaits du végétal en ville », réalisée à l’attention de Plante et Cité en 2010.

 

Par Sandrine Manusset, Vol. 3, n° 3 | Décembre 2012 Varia
http://developpementdurable.revues.org/9372

 

[...]

 

"... Les résultats présentés dans cet article sont extraits d’une étude exploratoire, réalisée en 2010 à la demande de Plante et Cité en partenariat avec Val’hor, l’UNEP, l’IDDR et l’AgroCampus1. Il s’agit d’une synthèse bibliographique réalisée à l’échelle internationale tendant à faire un état des lieux des connaissances scientifiques acquises sur les impacts positifs du Végétal en Ville. Quatre objectifs de mission étaient posés : apporter des arguments scientifiques à « plus de nature en ville » ; appréhender la globalité des bienfaits du végétal sur l’homme, à la fois dans son individualité et dans son espace social ; proposer des méthodes d’enquête aux acteurs de l’aménagement sur le thème santé/urbanisme et identifier des personnes-ressources. Dans ce cadre, cette étude a permis de rassembler 21 résultats scientifiques en faveur de « plus d'espaces verts, (...)"

 



Via Bernadette Cassel
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The Petroglyphs and Rock Art of Gabon, Africa

The Petroglyphs and Rock Art of Gabon, Africa | De Natura Rerum | Scoop.it
At the present time, the Ogooue valley contains the major part of the rock art petroglyph sites of Gabon, with the discovery of more than 1000 recorded rock art petroglyphs, essentially on paragneiss rocks.

Via Mariaschnee
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New Phytol.: A functional imaging study of germinating oilseed rape seed (2017)

New Phytol.: A functional imaging study of germinating oilseed rape seed (2017) | De Natura Rerum | Scoop.it
Germination, the process whereby a dry, quiescent seed springs to life, has been a focus of plant biologist for many years, yet the early events following water uptake, during which metabolism of the embryo is restarted, remain enigmatic. Here, the nature of the cues required for this restarting in oilseed rape (Brassica napus) seed has been investigated. A holistic in vivo approach was designed to display the link between the entry and allocation of water, metabolic events and structural changes occurring during germination. For this, we combined functional magnetic resonance imaging with Fourier transform infrared microscopy, fluorescence-based respiration mapping, computer-aided seed modeling and biochemical tools. We uncovered an endospermal lipid gap, which channels water to the radicle tip, from whence it is distributed via embryonic vasculature toward cotyledon tissues. The resumption of respiration is initiated first in the endosperm, only later spreading to the embryo. Sugar metabolism and lipid utilization are linked to the spatiotemporal sequence of tissue rehydration. Together, this imaging study provides insights into the spatial aspects of key events in oilseed rape seeds leading to germination. It demonstrates how seed architecture predetermines the pattern of water intake, which sets the stage for the orchestrated restart of life.

Via Nicolas Denancé, IRHS - Seed Lab, Loïc Lepiniec
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Geologists uncover Antarctica's fossil forests

Geologists uncover Antarctica's fossil forests | De Natura Rerum | Scoop.it
During Antarctica's summer, from late November through January, UW-Milwaukee geologists Erik Gulbranson and John Isbell climbed the McIntyre Promontory's frozen slopes in the Transantarctic Mountains. High above the ice fields, they combed the mountain's gray rocks for fossils from the continent's green, forested past.

By the trip's end, the geologists had found fossil fragments of 13 trees. The discovered fossils reveal that the trees are over 260 million years old, meaning that this forest grew at the end of the Permian Period, before the first dinosaurs, when Antarctica was still at the South Pole.

"People have known about the fossils in Antarctica since the 1910-12 Robert Falcon Scott expedition," said Gulbranson, a paleoecologist and visiting assistant professor in UWM's Department of Geosciences. "However, most of Antarctica is still unexplored. Sometimes, you might be the first person to ever climb a particular mountain."

Via Mariaschnee
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Why do starlings dance in the sky?

Why do starlings dance in the sky? | De Natura Rerum | Scoop.it
The National Geographic video above shows a flock of starlings in the Netherlands. How confounding and impressively graceful is this aerial ballet.

Via Mariaschnee
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The secret sea garden › Photos (ABC Science)

The secret sea garden › Photos (ABC Science) | De Natura Rerum | Scoop.it
Deep below the waves, photographer Ian Wallace discovers a beautiful world of seaweed gardens that few people get to see.

Via Mariaschnee
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Yellowstone spawned twin super-eruptions that altered global climate

Yellowstone spawned twin super-eruptions that altered global climate | De Natura Rerum | Scoop.it
A new geological record of the Yellowstone supervolcano's last catastrophic eruption is rewriting the story of what happened 630,000 years ago and how it affected Earth's climate. This eruption formed the vast Yellowston

Via Mariaschnee
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NASA's Solar Dynamics Observatory Spots a Lunar Transit

NASA's Solar Dynamics Observatory Spots a Lunar Transit | De Natura Rerum | Scoop.it
On Oct. 19, 2017, the Moon photobombed NASA’s Solar Dynamics Observatory, or SDO, when it crossed the spacecraft’s view of the Sun, treating us to these shadowy images.

Via Mariaschnee
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Flowers' secret signal to bees and other amazing nanotechnologies hidden in plants

New research shows bees see a blue halo around flowers thanks to nanostructures on its petals.
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Adresse électronique Twitter28 Facebook18 Linkedin2 Imprimer Flowers have a secret signal that’s specially tailored for bees so they know where to collect nectar. And new research has just given us a greater insight into how this signal works. Nanoscale patterns on the petals reflect light in a way that effectively creates a “blue halo” around the flower that helps attract the bees and encourages pollination.

This fascinating phenomenon shouldn’t come as too much of a surprise to scientists. Plants are actually full of this kind of “nanotechnology”, that enables them to do all kinds of amazing things, from cleaning themselves to generating energy. And, what’s more, by studying these systems we might be able to put them to use in our own technologies.
Most flowers appear colourful because they contain light-absorbing pigments that reflect only certain wavelengths of light. But some flowers also use iridescence, a different type of colour produced when light reflects from microscopically spaced structures or surfaces.
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Le Grand Frêne de La Jacine à Bouvante, Drôme

Le Grand Frêne de La Jacine à Bouvante, Drôme | De Natura Rerum | Scoop.it
L’arbre vedette de la petite commune de Bouvante est l’étrange Sapin bronzé. Mais il existe un autre trésor arboricole, beaucoup plus discret, qui lui se cache dans un petit vallon en c…
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Natural Wonders of the World in a Book

Natural Wonders of the World in a Book | De Natura Rerum | Scoop.it

DK Publishing published the beautiful book Natural Wonders of the World, a collection of travel and natural pictures to discover astonishing landscapes around the world.


Via Mariaschnee
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These are the most beautiful pictures of bugs you will ever see

These are the most beautiful pictures of bugs you will ever see | De Natura Rerum | Scoop.it
Photographer Levon Biss takes pictures of insects that defy imagination. Take a new look at the six-legged creatures that share this world with us.

Via Mariaschnee
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