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Articles sur Extinction

Affichage de 161 à 180 de 212 articles

The decline of this Indian vulture species has costed the economy $30 billion. Bharat Balasubramanian

Neither the charismatic nor the iconic: rethinking conservation

The rate of extinction of species today is many thousand times the natural rate. There are even examples that such loss can have serious impact on humans. So a critical question is: what is the role species…
Extinctions: happening since before we were around, but happening a lot more now. Andrew Milligan/PA

Our role in extinctions cannot be denied

The State of Nature report published this month showed that of more than 3,100 British species surveyed, 60% are in decline, and one in 10 of those species on the Red List are under threat of extinction…
Lonesome no more. George died on 24 June 2012. A.Davey

Stop singletons becoming endlings to save ecosystems

There can be few words as poignant as “endling”, the name given to the last surviving individual of a species. The picture (below) of Benjamin, the last Tasmanian tiger or thylacine, is heartbreaking…
The Christmas Island Shrew has been recorded four times since its discovery. Max Orchard

Australian endangered species: Christmas Island Shrew

It may be that there are no more shrews in Australia. There was only ever one representative, edging into the Australian political estate on the remote Christmas Island, closer to Java than any other part…
Giant creatures such as the marsupial ‘lion’ (Thylacoleo carnifex) didn’t die out from hunting. Peter Schouten

Climate change wiped out Australia’s megafauna

Throughout the Ice Age that characterised our planet for much of the last two million years or so mainland Australia, Tasmania and New Guinea formed a single landmass — Sahul. It was a strange and often…
The passing of Lonesome George, the last Pinta Island Tortoise, is emblematic of the mass extinction of species the earth is currently experiencing. Flickr/A Davey

Extinction: just how bad is it and why should we care?

“Dad, the world is missing amazing animals. I wish extinction wasn’t forever”. Despite my wife and I working as biologists, our five-year-old son came to make this statement independently. He is highlighting…
Mass extinctions caused by rapidly escalating levels of CO2 have occurred before. Global warming image from www.shutterstock.com

Another link between CO2 and mass extinctions of species

It’s long been known that massive increases in emission of CO2 from volcanoes, associated with the opening of the Atlantic Ocean in the end-Triassic Period, set off a shift in state of the climate which…
Dead as a … extinct species should stay extinct, and we should focus on saving the ones still living. Jebulon

De-extinction is about as sensible as de-death

On Friday, March 15 in Washington DC, National Geographic and TEDx are hosting a day-long conference on species-revival science and ethics. In other words, they will be debating whether we can, and should…
The Falkland Islands wolf was marooned for thousands of years before going extinct. Michael Rothman for Ace Coinage, Inc

History mystery solved: the origins of the Falkland Islands wolf

A long-standing natural history mystery has been solved, as my colleagues and I explain today in the journal Nature Communications. The Falkland Islands wolf, or warrah, may have been the world’s loneliest…
Scientists say legalising the trade in rhino horn would help save rhinos from extinction. AAP/Australian Science Media Centre

Scientists call for legalisation of rhino horn trade

Global bans on rhinoceros products have failed, and legalisation is required to save rhinos from extinction, argue scientists…
We’re happy to kill individual creatures in large numbers - what’s stopping us wiping out the biosphere? Darren Harmon

Is an ethic of biodiversity enough?

The environmental crisis has never loomed so large nor been so extensively debated as in the last few years. But at the same time we have never heard less about environmental ethics - the bio-inclusive…
Alb Quarrell holding his prized thylacine kill, 1921. Courtesty Tasmanian Museum and Art Gallery

Why did the Tasmanian tiger go extinct?

Australia accounts for one-third of all contemporary mammal extinctions worldwide. At least ten species and six subspecies of Australian marsupials have become extinct following European settlement, and…
We need to change the moral system that lets us off the hook for species extinction. Kelly Garbato

Threatened species: we’re failing on morality and policy

Extinction is a diminution of the natural legacy that we have inherited. It is a breach of the duty we have for inter-generational equity – that we should pass to our descendants a world as rich, intact…
Trees need stability and protection to get big, and both of those are in short supply. William Laurance

The end of big trees?

When I was a small lad there was a stately old tree in our backyard. My little sister and I practically lived in it — it was our lair, our fortress, our stairway to the sky. Decades later, I sometimes…
There’s not much left to show megafauna were hunted, but that doesn’t prove they weren’t. Peter Murray

Hunting or climate change? Megafauna extinction debate narrows

What is the oldest debate in Australian science? Probably, the argument over what caused extinction of our Pleistocene megafauna – the diprotodons, giant kangaroos, marsupial tapirs, über-echidnas and…
A male Spotted Pardalote rests on a twig near Toowoomba, Queensland. New bird species have appeared at a faster rate in America compared to Australia, the study found. http://www.flickr.com/photos/arthur_chapman

All living bird species mapped in giant family tree

Scientists have mapped the first family tree for all known living bird species, showing that new species appeared on Earth…

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