• Londres : les taxis se mettent au vert


     Londres : les taxis se mettent au vert

    Les taxis londoniens se mettent eux aussi à rouler propre. Les célèbres blacks cabs commencent à passer à l’électrique. 

      Indémodable, et même irremplaçable. Le célèbre taxi londonien, le black cab, traverse les rues et les époques, depuis les années 1950, avec sa silhouette bien reconnaissable, mais aussi avec le crépitement de ses pots d’échappement. C’est bientôt de l’histoire ancienne, car désormais, le black cab se distingue par son silence, celui de son moteur 100% électrique.

    500 taxis électriques

    Sur les 21 000 blacks cabs londoniens, plus de 500 sont désormais équipés de moteurs électriques. Car petit à petit, Londres bannit tous ses taxis diesel. Chaque nouveau véhicule mis en service a désormais l’obligation de rouler à l’énergie verte. Des nouveaux véhicules qui reviennent également moins chers pour les chauffeurs. Pour sept jours de travail, les recharges coûtent en moyenne 45 euros contre kilométrage équivalent, 250 euros de carburant pour les anciens blacks cabs. Ces nouveaux taxis électriques pourraient bientôt débarquer dans d’autres pays d’Europe où la demande est forte : aux Pays-Bas, en Norvège, mais aussi en France.
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  • Projeto Quelônios da Amazônia – RIO GUAPORÉ

    English legends are available. 

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  • 1/3 da vegetação nativa do Brasil está em áreas pobres

    1/3 da vegetação nativa do Brasil está em áreas pobres

    Dado faz parte de diagnóstico da biodiversidade apresentado nesta quinta-feira por cientistas brasileiros; relatório procura dar subsídio à tomada de decisões

    Júlia Marques, O Estado de S.Paulo

    Bioma da Caatinga está ameaçado  Foto: José Patrício/Estadão

    Um terço da cobertura vegetal nativa do Brasil está concentrada em áreas pobres, que deveriam ser consideradas prioritárias para a conservação de espécies. Esse e outros dados fazem parte de um diagnóstico sobre a biodiversidade do País, apresentado nesta quinta-feira, 8, por cientistas brasileiros. O documento reúne informações para dar subsídio à tomada de decisão de gestores nessa área. O Brasil é um dos países mais ricos em biodiversidade do mundo, mas enfrenta desafios. “A situação se agravou nos últimos dez anos. Os principais causadores dessa perda ainda são a mudança do uso da terra, que leva à degradação ambiental, e, mais recentemente, as mudanças climáticas”, explica Carlos Joly, professor da Universidade Estadual de Campinas (Unicamp) e coordenador da Plataforma Brasileira de Biodiversidade e Serviços Ecossistêmicos (BPBES), responsável pelo documento…
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  • Wyoming billionaire pledges to protect 30% of the planet by 2030

    Wyoming billionaire pledges to protect 30% of the planet by 2030

    Hansjörg Wyss leads a conservation effort of epic proportions.

    Matt Hickman

    With a 8.5 million assist from the Wyss Foundation, the Andes Amazon Fund will disperse funds to a range of local organizations working to protect the forested headwaters of the Amazon River basin in Peru and beyond. (Photo: Jorge Láscar/Flickr)

    If you follow global conservation and don’t already know the name Hansjörg Wyss, there’s a good chance you soon will. Born in Bern, Switzerland, the 83-year-old entrepreneur and businessman first made his fortune in the Belgian steel industry before establishing the U.S. division of Synthes, a multinational medical device manufacturer best known for producing internal screws and plates used to help mend fractured bones. (The company has since been acquired by Johnson & Johnson.) …
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  • Redrawing the Map: How the World’s Climate Zones Are Shifting

    Redrawing the Map: How the World’s Climate Zones Are Shifting

    Rising global temperatures are altering climatic zones around the planet, with consequences for food and water security, local economies, and public health. Here’s a stark look at some of the distinct features that are already on the move.

    By Nicola Jones

    A young boy herds his goats in the Ghat District of Libya, which has been converted largely to desert in the last 100 years. TAHA JAWASHI/AFP/Getty Images

    As human-caused emissions change the planet’s atmosphere, and people reshape the landscape, things are changing fast. The receding line of Arctic ice has made headlines for years, as the white patch at the top of our planet shrinks dramatically. The ocean is rising, gobbling up coastlines. Plants, animals, and diseases are on the move as their patches of suitable climate move too.

    Sometimes, the lines on the map can literally be redrawn: the line of where wheat will grow, or where tornadoes tend to form, where deserts end, where the frozen ground thaws, and even where the boundaries of the tropics lie…

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  • Plant Native!

    Ecologists Have this Simple Request to Homeowners — Plant Native

    A new study shows how quickly songbird populations fall off when gardens are planted with exotic trees and shrubs

     By Adam Cohen smithsonian.com They say the early bird catches the worm. For native songbirds in suburban backyards, however, finding enough food to feed a family is often impossible. A newly released survey of Carolina chickadee populations in the Washington, D.C., metro area shows that even a relatively small proportion of nonnative plants can make a habitat unsustainable for native bird species. The study, published last week in Proceedings of the National Academy of Sciences, is the first to examine the three-way interaction between plants, arthropods that eat those plants, and insectivorous birds that rely on caterpillars, spiders and other arthropods as food during the breeding season. Based on data collected in the backyards of citizen-scientist homeowners, the researchers arrived at an explicit threshold: In areas made up of less than 70 percent native plant biomass, Carolina chickadees will not produce enough young to sustain their populations. At 70 percent or higher, the birds can thrive…
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  • Tigres, rhinocéros : la décision chinoise qui choque

    Tigres, rhinocéros : la décision chinoise qui choque

    La Chine vient d’annoncer qu’elle autorisait de nouveau le commerce de produits issus de tigres et de rhinocéros, des espèces en danger.


     Les rhinocéros ne sont plus très nombreux en Afrique-du-Sud, tout comme les tigres de Sibérie. Ils sont aujourd’hui plus que jamais menacés depuis que Pékin (Chine) a annoncé autoriser le commerce de produits issus de tigres et de rhinocéros. Ces produits, ce sont les os, ou parties génitales du tigre, vendus à prix d’or. Les cornes de rhinocéros se monnaient jusqu’à 50 000 euros le kilo, 400 000 euros pièce, sur le marché noir, et sont très prisé des Chinois dans la médecine traditionnelle pour leurs vertus thérapeutiques ou aphrodisiaques.

    Leur arrêt de mort ?

    Il y a 25 ans, la Chine avait pourtant interdit ces produits. Dans le monde, il ne reste aujourd’hui que 4 000 tigres à l’état sauvage, 30 000 rhinocéros. Pour les associations de protection des animaux, cette décision chinoise signe leur arrêt de mort. Mais les autorités chinoises émettent des conditions : le commerce sera limité à certains hôpitaux et les animaux concernés devront être uniquement élevés en captivité, ou de mort naturelle.

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  • China Reverses Its Ban on the Use of Rhino and Tiger Parts in Medicine

    China Reverses Its Ban on the Use of Rhino and Tiger Parts in Medicine

    Conservationists worry that the decision will further imperil threatened species

    By Brigit Katz smithsonian.com In a controversial and surprising move, China announced on Monday that it will reverse a decades-old ban on the use of rhinoceros horns and tiger bones in medicine. As Javier C. Hernández of the New York Times reports, China’s State Council said the reversal will only apply to certified hospitals and doctors, and that the parts must be sourced from animals raised in captivity, excluding zoo animals. But conservationists worry that that a legal trade will provide cover for poached rhino and tiger parts, imperilling already threatened species
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  • Extreme Botany: The Precarious Science of Endangered Rare Plants

    Extreme Botany: The Precarious Science of Endangered Rare Plants

    They don’t make the headlines the way charismatic animals such as rhinos and elephants do. But there are thousands of critically endangered plants in the world, and a determined group of botanists are ready to go to great lengths to save them.

    By Janet Marinelli • October 18, 2018

    Botanist Steve Perlman rappels into the Kalalau Valley, a biodiversity hotspot on the Hawaiian island of Kauai. Courtesy of Bryce Johnson/FLUX Hawaii

    To save plants that can no longer survive on their own, Steve Perlman has bushwhacked through remote valleys, dangled from helicopters, and teetered on the edge of towering sea cliffs. Watching a video of the self-described “extreme botanist” in actio­­n is not for the faint-hearted. “Each time I make this journey I’m aware that nature can turn on me,” Perlman says in the video as he battles ocean swells in a kayak to reach the few remaining members of a critically endangered species on a rugged, isolated stretch of Hawaiian coastline. “The ocean could suddenly rise up and dash me against the rocks like a piece of driftwood.”…
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  • A Brazilian rainforest is now being called an ‘extinction vortex’

    A Brazilian rainforest is now being called an ‘extinction vortex’


     An example of recent Atlantic Forest fragmentation. (Photo: SPOT Satellite/Wiki Commons)

    It’s sometimes a challenge for scientists to articulate just how extensively certain ecosystems in sensitive areas around the world are being threatened. There’s nothing ambiguous about the term “extinction vortex,” however. That’s what one of the world’s most important forests — Brazil’s Atlantic Forest — is now being called. It’s difficult to fathom just how much this once-expansive rainforest has been transformed. Since colonization in the 16th century, the forest has been reduced from over 1.1 million square kilometers (420,000 square miles) to a measly 0.143 square kilometers (0.06 square miles). And there’s no doubt as to the cause of this destruction: human activities, mostly from farming and logging…
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