Pic: Cornelius Brown (PD) India has always been a land with a robust vulture population, owing to its 500 million cattle population (almost half of the world’s 1.3 billion) and the taboo associated with eating beef (80% of the country is Hindu). However this situation has drastically changed in just a generation. From 1992 to 2007, the Indian population of some 400 million vultures of 9 species has dropped 99.9% due to the widespread use of a drug used to treat inflammatory disorders and pain in cattle called diclofenac. The indigenous White-rumped Vulture alone, with a population of some 80 million, was described in 1985 as “possibly the most abundant large bird of prey in the world.” Today the White-rumped Vulture is listed as Critically Endangered. Tragically, a vulture that eats the flesh of a cow to whom diclofenac was recently administered quickly perishes from acute kidney failure. This vulture population collapse has led to severe problems in India from undisposed cattle corpses. Whereas previously a bull could be cleaned in as little as 20 minutes by a pack of vultures, now the carcass putrifies and may cause water contamination from runoff. Moreover, the open niche has led to a sharp rise in the numbers of roaming wild dogs. Whereas vultures are an ecological dead-end for pestilence owing to their super-acidic digestive system, dogs and rats are much more liable to spread disease. Anthrax, plague, and the most fatal disease known to man: rabies, have seen a marked rise since the beginning of the vulture crisis. Today in India, 30,000 people die from rabies each year, more than half the world’s total.… Read the rest
Una investigación innovadora de un experto de la Universidad de Nueva Inglaterra revela que nuestros parientes los neandertales bien pudieron comunicarse entre ellos hablando en lenguas no muy diferentes a las que utilizamos los humanos modernos en la actualidad.
La nouvelle datation d’un fossile découvert en Turquie en 2002 suggère qu’après une première sortie d'Afrique de Homo erectus, il y a plus de 1,6 million d'années, une deuxième a suivi, il y a environ 1,2 million d’années.
A review of genetic evidence suggests that the Native American founding population lived in Beringia for thousands of years before migrating south into North America. And sediments taken from the Bering Sea show that at the time, the region also had woody plants for building fires, and grassland steppes where woolly mammoths and other game animals could have grazed. “The central part of Beringia was probably the mildest, most comfortable place to live at high latitudes during the last glacial maximum. It’s the most logical place for a group of people to hunker down,” John Hoffecker of the University of Colorado, Boulder, told Live Science. Archaeological evidence of their presence has yet to be found, however.
My son, Billy, was born three weeks and two days ago. People say he looks like me, but he very obviously looks like a baby, or at a pinch Sir Winston Churchill; he sleeps, and feeds, and poos, and when he wants us to help in the process of one of those things, he cries. [...]
The movement of the Sun in the skies of Petra determined the way in which the monuments of this and other Natabean cities were erected. This is according to a statistical analysis on the spatial position of their palaces, temples and tombs carried out by scientists from Instituto de Astrofisica de Canarias ...
BURGOS, SPAIN—A controversial new study reported in Science News claims that two species of human ancestors are present at the nation of Georgia’s site of Dmanisi. The partial skeletons, which display disparities in several skeletal features, including jaw sizes, had all been categorized as Homo erectus individuals living some 1.8 million years ago by the excavators. But a team led by José María Bermúdez de Castro of the National Research Center on Human Evolution claims that small-jawed individuals were related to early African Homo populations, while the larger-jawed individuals belonged to Homo georgicusthat lived at the site several hundred thousand years later.
Nous avons posé ces questions que plus personne n’ose poser. Pourquoi ce domaine – plus que d’autres – est-il sujet à des attaques permanentes et à des récupérations de toutes sortes? Et d’abord, qu’est-ce que l’évolution? Est-une science? Discussion de haute tenue avec Pierre Kerner - chercheur en génétique évolutive, maître de conférences en biologie des organismes à […]
Les coutumes et mœurs de nos ancêtres représentent un sujet d’étude passionnant auquel les archéologues n’ont de cesse de s’intéresser. Chaque objet, ossement et vestige mis au jour lors de fouilles représente pour les chercheurs un pas en avant vers la compréhension de ces hommes qui nous ont...