/magazine

See how Arctic permafrost thaws and the damage it does
▻https://www.nationalgeographic.com/environment/2019/08/how-abrupt-permafrost-thaw-threatens-arctic-feature/?sf224500020=1

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2019/09/tipping-point-turndra/tipping-point-tundra-og.ngsversion.1565813881343.adapt.1900.1.jpg

he unexpectedly rapid collapse of ice-rich permafrost in the Arctic could pump billions of additional tons of methane and carbon dioxide into the atmosphere every year—a threat that has yet to be fully accounted for in climate models. Scientists are discovering destabilized landscapes where permafrost that once thawed a few inches a year can now abruptly thaw up to 10 feet within days or weeks, creating wetlands in once frozen regions and accelerating emissions from up to 1,600 gigatons of carbon still locked underground.

https://www.nationalgeographic.com/interactive-assets/nggraphics/ngm-1908-tippingpointtundra/build-2019-08-14_14-57-18/ngm-assets/img/ngm-1908-tippingpointtundra_ai2html-desktop-medium.jpg

▻https://www.nationalgeographic.com/environment/2019/08/arctic-permafrost-is-thawing-it-could-speed-up-climate-change-fe

#permafrost #arctique #climat #méthane #dioxyde_de_carbone

The World Has Left Yemen to Die
▻https://www.nationalgeographic.com/magazine/2018/08/dispatches-yemen-health-crisis/?sf219487588=1

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The World Has Left Yemen to Die
Exclusive photos give a rare look inside the country, where civil war has trapped civilians in a life of violence and disease.

By Nina Strochlic
Photographs by Matteo Bastianelli

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Palm oil is unavoidable. Can it be sustainable?
▻https://www.nationalgeographic.com/magazine/2018/12/palm-oil-products-borneo-africa-environment-impact/?sf219491406=1

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In Gabon, one of Africa’s most forested countries, palm oil is coming home, and a boom may be on the horizon. Situated on the Equator and on the continent’s west coast, Gabon is roughly the size of Colorado with a third of the people. More than 76 percent of the country is covered in forest, with 11 percent of its land area protected in national parks. It’s a wildlife wonderland.

“It’s exactly the kind of large, intact forest you want to protect from any kind of development,” says Glenn Hurowitz, CEO of Mighty Earth, a Washington D.C.-based environmental organization that has criticized Olam’s palm oil operations in Gabon. “There’s so much degraded land [across the tropics]. Why would you send your palm oil plantations to countries that have so much existing forest?”

One answer is that Gabon wants them. The former French colony has the fourth highest GDP per capita in sub-Saharan Africa, but much of the revenue comes from petroleum. It needs to diversify. Hurowitz argues that Gabon should be developing ecotourism instead. A relatively safe country with spectacular parks and wildlife, it has few airstrips, barely passable roads, and scant lodging. There’s a huge opportunity for more tourism—one that Gabon’s parks agency, the Agence Nationale des Parcs Nationaux (ANPN), is pursuing.

#Gabon #industrie_palmiste

Maps reveal how public transit and geography can shape cities
▻https://www.nationalgeographic.com/magazine/2019/04/maps-show-how-public-transit-and-geography-shape-cities

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2019/04/city-maps-five-global-og.ngsversion.1552575322163.adapt.1900.1.png

#animation #isochrones #cartographie #transports #urban_matter

In India, clean water is out of reach for many
▻https://www.nationalgeographic.com/magazine/2019/03/paul-salopek-out-of-eden-walk-india-water

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Northern India embraces a sprawling network of waters, from the muddy tributaries of the Indus in the west to the banks of the sacred Ganges coiling along its central plains and the miles-wide currents of the Brahmaputra in the east. Creeks, canals, wetlands, dams, and swollen torrents help irrigate the most populous democracy on Earth. Yet this river-etched heartland is the scene of one of the most dire water crises today.

Last year, a government study revealed that nearly half India’s population—some 600 million people—ekes by on scarce or polluted supplies of water. As many as 200,000 Indians die annually from the effects of water contamination. And it’s been projected that more than 20 major cities—Delhi, Bangalore, and Hyderabad among them—will zero out their groundwater stores in less than two years.

#Inde #eau

Arctic Wildlife’s Last Habitat Will Be Ice Strip
▻https://www.nationalgeographic.com/magazine/2018/01/arctic-wildlife-sea-ice/?sf206808415=1

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2018/01/last-ice/last-ice-climate-change-ocean-sea-animals-3.ngsversion.1513659870309.adapt.1900.1.jpg

Within a few decades such vistas are unlikely to exist, at least not here, during summer. As the planet heats up, the summer sea ice and all the superbly adapted life it supports—the bears, the seals, the walruses, the whales, the Arctic cod, the crustaceans, the ice algae—may well vanish around Baffin. As we fly over the vast frozen expanse, it almost strains belief to think that we’re witnessing—and with the rest of humanity, helping to cause—its demise. In the 1980s satellite data showed that Arctic sea ice extended on average across nearly three million square miles at the end of summer. Since then more than a million square miles has been lost—an area roughly the size of Alaska, Texas, and California combined.

Climate models suggest that by the 2050s, less than 200,000 square miles of perennial sea ice will remain. The good news, such as it is: What’s left will collect in a compact region, not here but farther north, above Greenland and Canada’s Ellesmere Island. That shrunken redoubt will be the last stand for many of the Arctic’s wild things.

“The animals that depend on the edge of the sea ice for a living will be congregating there in the summer,” says marine ecologist Enric Sala, leader of the National Geographic Society’s Pristine Seas project. “It will be like one of those watering holes in Africa where everybody shows up.”

https://www.nationalgeographic.com/interactive-assets/nggraphics/ngm-1801-last-ice/build-2017-12-19_10-53-36/ngm-assets/img/ngm-1801-last-ice_ai2html-desktop-medium.jpg

#arctique #climat #cartographie #visualisation

See the Surprising Ways Mars Has Changed in 3 Billion Years
▻https://www.nationalgeographic.com/science/2016/11/exploring-mars-map-panorama-pictures/?sf202620388=1

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2016/11/Mars/interactive/wet-mars-og.ngsversion.1479509817121.adapt.1900.1.jpg

If #Mars explorers could literally step back 3.8 billion years, they would be walking on a warmer, gray world. The iron-rich soil had not yet rusted, and the planet was blanketed in a thicker atmosphere. Geologic clues suggest that Mars back then was covered with crater lakes, river valleys, and maybe even a large ocean in the northern hemisphere.

#eau

Lost at Sea: Why the Birds You Don’t See Are Fading Away
▻https://www.nationalgeographic.com/magazine/2018/07/seabird-crisis-conservation-birds-oceans/?beta=true

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Seabirds are being devastated by predators, fishing, and climate change. Saving them begins with knowing more about them.

#oiseaux_de_mer #oiseaux #pêche_industrielle #climat #pollution #extinction #it_has_begun #collapsologie #catastrophe

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This Refuge May Be the Most Contested Land in the U.S.
▻https://www.nationalgeographic.com/magazine/2018/06/arctic-national-wildlife-refuge-america-oil-risk

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Congress voted to open the Arctic National Wildlife Refuge to oil drilling. Here’s what’s at stake for America’s wild frontier.

#artcique #nature #cartographie #extractivisme #Alaska

https://www.nationalgeographic.com/interactive-assets/nggraphics/ngm-1806-anwr-map/build-2018-05-24_11-56-34/ngm-assets/img/ngm-1806-anwr-map_ai2html-desktop-medium.jpg

Report about plastic #trash in the South #Pacific #Ocean

What Happens to the Plastic We Throw Out
▻https://www.nationalgeographic.com/magazine/2018/06/the-journey-of-plastic-around-the-globe

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2018/06/plastic/plastic-henderson-island-interactive-og.ngsversion.1526443348144.adapt.1900.1.png

How a piece of trash can travel from land to Henderson Island, an uninhabited, remote island in the middle of the South Pacific Ocean

#environnement #déchet

Interactive Map: See How Birds Migrate Throughout the Western Hemisphere
▻https://www.nationalgeographic.com/magazine/2018/03/bird-migration-interactive-maps

https://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2018/03/bird-migrations/flyway_og.ngsversion.1519694133289.adapt.1900.1.jpg

Migratory birds have made their thousand-mile flights for millennia, but we are just now learning to map their mesmerizing journeys.

#super_beau #cartographie #oiseaux #oiseaux_migrateurs #migrations #cartographie_animée

Some of the World’s Biggest Lakes Are Drying Up. Here’s Why.
▻https://www.nationalgeographic.com/magazine/2018/03/drying-lakes-climate-change-global-warming-drought

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Warming climates, drought, and overuse are draining crucial water sources, threatening #habitats and #cultures.

#lacs #climats #eau

Under surveillance: satellites, cameras, and phones track us
▻https://www.nationalgeographic.com/magazine/2018/02/surveillance-watching-you

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#satellites #surveillance #Planet_labs

If Birds Left Tracks in the Sky, They’d Look Like This

If birds left tracks in the sky, what would they look like? For years Barcelona-based photographer Xavi Bou has been fascinated by this question. Just as a sinuous impression appears when a snake slides across sand, he imagined, so must a pattern form in the wake of a flying bird. But of course birds in flight leave no trace—at least none visible to the naked eye. Bou, now 38, spent the past five years trying to capture the elusive contours drawn by birds in motion, or, as he says, “to make visible the invisible.”

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#photographie #oiseaux #traces #ciel #beau
cc @albertocampiphoto @philippe_de_jonckheere