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Home > News > Tags > extinction
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Stories about: extinction |
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As it travels through the Milky Way, the Sun experiences a periodical oscillation in relation to the galactic plane, meaning that the solar system intersects with some of the densest areas of the galaxy. This in turn can send comets and asteroids our way and determine catastrophic impacts with the Earth, such as that... |
13 May 2008
09:31 GMT |
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Over 6.6 billion people inhabit the planet today. With all that, 70,000 years ago, no more than 2,000 people existed, as revealed by a new research carried out at Stanford University and published in the American Journal of Human Genetics. 70,000 years ago, our species was represented only by a small isolated African... |
29 April 2008
04:42 GMT |
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Although most of the time they are associated to death and destruction, asteroids such as the one responsible for the extinction of the marine life 250 million years ago, or that of the dinosaurs more than 65 million years ago, traveling through the immensity of space could have also brought organic materials, necess... |
18 December 2007
04:41 GMT |
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The 6 billion humans inhabiting the Earth are here by sheer casualty. 74,000 years ago, the human species was at the brink of extinction, with a mere census of 2,000 individuals who finally managed to overcome the crisis and transmit their genetic pool to the modern man. The crisis coincided with the first migrations... |
27 September 2007
15:31 GMT |
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It has already been predicted that by the end of the century, half of the languages spoken now worldwide will be gone. Not by evolving into another language (like Latin into Italian, Spanish, French or Romanian), but by being wiped out by other languages. A team has detected five global "hot spots" of indigenous lang... |
19 September 2007
04:35 GMT |
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The most famous mass extinction is perhaps that of the dinosaurs, 65 million years ago. The current man made extinction could be even worse. And several mass extinctions occurred along the geological eras. But the dinosaur extinction could be a minor event compared to what the clumsy snails and clams did 250 million ... |
31 July 2007
03:43 GMT |
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At least five mass extinctions may have occurred in the history of our planet, meaning that in a relatively short period of time, a large number of species have disappeared. Probably the most famous one took place 65 million years ago at the end of the Cretaceous period, when the dinosaur domination reached its end.... |
28 July 2007
07:01 GMT |
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Mekong giant catfish can reach 3 m (10 ft) in length and be 350 kg (780 pounds) and arapaima of the Amazon can be 4.5 m (15 ft) long. But all these "little" creatures are dwarfed by the Chinese paddlefish, a monster that is 23 feet (7 meters) long and weighs 500 kg (even if recorded data speak about 3.5 m (12 ft) in... |
27 July 2007
06:37 GMT |
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By far, this is the most emblematic giant beast of the Ice Age: the woolly mammoth. Now, a research investigating DNA from the bones, teeth and tusks of the extinct mammoths showed how their populations fluctuated after the last interglacial period, during the last glaciation. "In combination with the results on othe... |
11 June 2007
02:48 GMT |
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About 6 waves of massive extinction are known in the history of the Earth. The last one wiped out the dinosaur world 65 million years ago and was probably due to a meteorite collision. But the recent one has no natural causes. It is man made and rampant, eliminating three animal or plant species every hour. Scientist... |
23 May 2007
06:53 GMT |
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A group of scientists discovered new compelling evidence of a cataclysmic event that took place 13,000 years ago on Earth. A large comet exploded over the Earth and created a hail of fireballs that set most of the Northern Hemisphere on fire.After analyzing 26 different sites in Europe and North America, they found ... |
21 May 2007
08:42 GMT |
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Faster mating means safer existence. This is valid at least in the case of the large herbivorous mammals, from rhinos and elephants to deer and antelopes: the slower their reproductive period, the higher the risk of extinction. Habitat loss and naturally limited living areas are also great factors of risk, but under ... |
16 May 2007
06:52 GMT |
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This week, astronomers reported the brightest star explosion in our own galaxy and were all thrilled by the size and amount of light that the most spectacular supernova ever recorded had produced.Surely, they would be thrilled to see another explosion even closer to our solar system, like perhaps the star Eta Carina... |
12 May 2007
07:06 GMT |
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At the end of the Cretaceous Period, approximately 65 million years ago, a catastrophic extinction event ended dinosaurs' dominance on land. One group of dinosaurs is known to have survived to the present day. Taxonomists consider modern birds to be direct descendants of theropod dinosaurs.The rise and fall of ... |
24 April 2007
02:47 GMT |
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Leopard is the symbol of grace and force. Unfortunately, these magnificent beasts have been intensively persecuted and poached since ancient times, and have disappeared from many areas, like North Africa, Middle East or Eastern China, while only in South Saharan Africa some populations maintain healthy. A recent cen... |
21 April 2007
04:00 GMT |
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Dinosaurs enjoyed their odor, as these ancient flowers exist since the Cretaceous Epoch (145.5 to 65.5 million years ago). They existed also in Europe till the arrival of the glaciations. But today, they are restricted to subtropical climes. About 60 % of magnolia species are found in Asia, with over 40 % growing in ... |
6 April 2007
06:11 GMT |
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