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Showing posts with label Science And Technology. Show all posts
Showing posts with label Science And Technology. Show all posts

Friday, 26 November 2010

10 Most Amazing Extinct Animals ( Worth Reading )

1 ) Dodo: the archetype of extinct species (extinct since late 17th century )

The Dodo (Raphus cucullatus) was a flightless bird that lived on the island of Mauritius. Related to pigeons and doves, it stood about a meter tall (three feet), lived on fruit and nested on the ground. The dodo has been extinct since the mid-to-late 17th century. It is commonly used as the archetype of an extinct species because its extinction occurred during recorded human history, and was directly attributable to human activity. The adjective phrase "as dead as a dodo" means undoubtedly and unquestionably dead. The verb phrase "to go the way of the dodo" means to become extinct or obsolete, to fall out of common usage or practice, or to become a thing of the past. 

2 ) Cave Lion: one of the largest lions ever (extinct 2,000 years ago)

  The cave lion, also known as the European or Eurasian cave lion, is an extinct subspecies of lion known from fossils and a wide variety of prehistoric art. This subspecies was one of the largest lions. An adult male, which was found in 1985 near Siegsdorf (Germany), had a shoulder height of around 1.2 m and a length of 2.1 m without a tail, which is about the same size as a very big modern lion. This male was even exceeded by other specimens of this subspecies. Therefore this cat may have been around 5-10% bigger than modern lions. It apparently went extinct about 10,000 years ago, during the Würm glaciation, though there are some indications it may have existed as recently as 2,000 years ago, in the Balkans.

 

3 ) Great Auk: largest of all auks (extinct since 1844) 


 The Great Auk was the only species in the genus Pinguinus, flightless giant auks from the Atlantic, to survive until recent times, but is extinct today. It was also known as garefowl, or penguin.

Standing about 75 centimetres or 30-34 inches high and weighing around 5 kg, the flightless Great Auk was the largest of the auks. It had white and glossy black feathers. In the past, the Great Auk was found in great numbers on islands off eastern Canada, Greenland, Iceland, Norway, Ireland and Great Britain, but it was eventually hunted to extinction. Remains found in Floridan middens suggest that at least occasionally, birds ventured that far south in winter as recently as in the 14th century. 

4 ) Aurochs: a very large type of cattle (extinct since 1627) 


One of Europe's most famous extinct animals, the aurochs or urus (Bos primigenius) were a very large type of cattle. Aurochs evolved in India some two million years ago, migrated into the Middle East and further into Asia, and reached Europe about 250,000 years ago.

By the 13th century A.D., the aurochs' range was restricted to Poland, Lithuania, Moldavia, Transylvania and East Prussia. The right to hunt large animals on any land was restricted to nobles and gradually to the royal household. As the population of aurochs declined, hunting ceased but the royal court still required gamekeepers to provide open fields for the aurochs to graze in. The gamekeepers were exempted from local taxes in exchange for their service and a decree made poaching an aurochs punishable by death. In 1564, the gamekeepers knew of only 38 animals, according to the royal survey. The last recorded live aurochs, a female, died in 1627 in the Jaktorów Forest, Poland. The skull was later taken by the Swedish Army and is now the property of Livrustkammaren in Stockholm.

In the 1920s two German zookeepers, the brothers Heinz and Lutz Heck, attempted to breed the aurochs back into existence (see breeding back) from the domestic cattle that were their descendants. Their plan was based on the conception that a species is not extinct as long as all its genes are still present in a living population. The result is the breed called Heck Cattle, 'Recreated Aurochs', or 'Heck Aurochs', which bears an incomplete resemblance to what is known about the physiology of the wild aurochs 
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5 ) Caspian Tiger: the third largest (extinct since 1970) 



The Caspian tiger or Persian tiger was the westernmost subspecies of tiger, found in Iran, Iraq, Afghanistan, Turkey, Mongolia, Kazakhstan, Caucasus, Tajikistan, Turkmenistan and Uzbekistan until it apparently became extinct in the 1970s. Of all the tigers known to the world, the Caspian tiger was the third largest.

The body of this subspecies was quite stocky and elongated with strong legs, big wide paws and unusually large claws. The ears were short and small, and gave the appearance of being without hair on the tips. Around the cheeks the Caspian tiger was generously furred and the rest of its fur was long and thick. The colouration resembled that of the Bengal tiger. Male Caspian tigers were very large and weighed 169-240 kg. Females were not as large, weighing 85-135 kg. There are still occasional claims of the Caspian tiger being sighted. 

6 ) Irish Deer: the largest deer that ever lived (extinct about 7,700 years ago) 


The Irish Elk or Giant Deer, was the largest deer that ever lived. It lived in Eurasia, from Ireland to east of Lake Baikal, during the Late Pleistocene and early Holocene. The latest known remains of the species have been carbon dated to about 5,700 BC, or about 7,700 years ago. The Giant Deer is famous for its formidable size (about 2.1 meters or 7 feet tall at the shoulders), and in particular for having the largest antlers of any known cervid (a maximum of 3.65 meters/12 feet from tip to tip and weighing up to 90 pounds).

Discussion of the cause of their extinction has still focused on the antlers (rather than on their overall body size), which may be due more to their impact on the observer than any actual property. Some have suggested hunting by man was a contributing factor in the demise of the Irish Elk as it was with many prehistoric megafauna, even assuming that the large antler size restricted the movement of males through forested regions or that it was by some other means a "maladaptation". But evidence for overhunting is equivocal, and as a continental species, it would have co-evolved with humans throughout its existence and presumably have adapted to their presence.  


7 ) Steller's Sea Cow: the defenseless beast (extinct since 1768) 


 Formerly found near the Asiatic coast of the Bering Sea, it was discovered in in 1741 by the naturalist Georg Steller, who was traveling with the explorer Vitus Bering. The sea cow grew up to 7.9 meters (25.9 ft) long and weighed up to three tons, much larger than the manatee or dugong. It looked somewhat like a large seal, but had two stout forelimbs and a whale-like tail. According to Steller, "The animal never comes out on shore, but always lives in the water. Its skin is black and thick, like the bark of an old oak..., its head in proportion to the body is small..., it has no teeth, but only two flat white bones—one above, the other below". It was completely tame, according to Steller. Fossils indicate that Steller's Sea Cow was formerly widespread along the North Pacific coast, reaching south to Japan and California. Given the rapidity with which its last population was eliminated, it is likely that the arrival of humans in the area was the cause of its extinction elsewhere as well. There are still sporadic reports of sea cow-like animals from the Bering area and Greenland, so it has been suggested that small populations of the animal may have survived to the present day. This remains so far unproven.


 8 ) Thylacine: the Tasmanian Tiger (extinct since 1936) 


 The Thylacine was the largest known carnivorous marsupial of modern times. Native to Australia and New Guinea, it is thought to have become extinct in the 20th century. It is commonly known as the Tasmanian Tiger (due to its striped back), and also known as the Tasmanian Wolf, and colloquially the Tassie (or Tazzy) Tiger or simply the Tiger. It was the last extant member of its genus, Thylacinus, although a number of related species have been found in the fossil record dating back to the early Miocene.

The Thylacine became extinct on the Australian mainland thousands of years before European settlement of the continent, but survived on the island of Tasmania along with a number of other endemic species such as the Tasmanian Devil. Intensive hunting encouraged by bounties is generally blamed for its extinction, but other contributory factors may have been disease, the introduction of dogs, and human encroachment into its habitat. Despite being officially classified as extinct, sightings are still reported. 


9 ) Quagga: half zebra, half horse (extinct since 1883) 


One of Africa's most famous extinct animals, the quagga was a subspecies of the plains zebra, which was once found in great numbers in South Africa's Cape Province and the southern part of the Orange Free State. It was distinguished from other zebras by having the usual vivid marks on the front part of the body only. In the mid-section, the stripes faded and the dark, inter-stripe spaces became wider, and the hindquarters were a plain brown. The name comes from a Khoikhoi word for zebra and is onomatopoeic, being said to resemble the quagga's call.

The quagga was originally classified as an individual species, Equus quagga, in 1788. Over the next fifty years or so, many other zebras were described by naturalists and explorers. Because of the great variation in coat patterns (no two zebras are alike), taxonomists were left with a great number of described "species", and no easy way to tell which of these were true species, which were subspecies, and which were simply natural variants. Long before this confusion was sorted out, the quagga had been hunted to extinction for meat, hides, and to preserve feed for domesticated stock. The last wild quagga was probably shot in the late 1870s, and the last specimen in captivity died on August 12, 1883 at the Artis Magistra zoo in Amsterdam.

Because of the great confusion between different zebra species, particularly among the general public, the quagga had become extinct before it was realized that it appeared to be a separate species. The quagga was the first extinct creature to have its DNA studied. Recent genetic research at the Smithsonian Institution has demonstrated that the quagga was in fact not a separate species at all, but diverged from the extremely variable plains zebra. 

10 )  Tyrannosaurus Rex (extinct 65 million years ago)




Tyrannosaurus rex was one of the largest land carnivores of all time, measuring up to 43.3 feet long, and 16.6 ft tall, with an estimated mass that goes up to 7 tons. Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small and they retained only two digits.

Fossils of T. rex have been found in North American rock formations dating to the last three million years of the Cretaceous Period at the end of the Maastrichtian stage, approximately 68.5 to 65.5 million years ago; it was among the last dinosaurs to exist prior to the Cretaceous-Tertiary extinction event. More than 30 specimens of T. rex have been identified, some of which are nearly complete skeletons. Some researchers have discovered soft tissue as well. The abundance of fossil material has allowed significant research into many aspects of its biology, including life history and biomechanics. 

Friday, 27 August 2010

10 People with Unbelievable Medical Conditions [ MusT ReaD ]

1. The Woman Who has 200 Orgasms every day


UK's Sarah Carmen, 24, is a 200-a-day orgasm girl who gets good, good, GOOD vibrations from almost anything. She suffers from Permanent Sexual Arousal Syndrome (PSAS), which increases blood flow to the sex organs. "Sometimes I have so much sex to try to calm myself down I get bored of it. And men I sleep with don't seem to make as much effort because I climax so easily."



She believes her condition was brought on by the pills. "Within a few weeks I just began to get more and more aroused more and more of the time and I just kept having endless orgasms. It started off in bed where sex sessions would last for hours and my boyfriend would be stunned at how many times I would orgasm. Then it would happen after sex. I'd be thinking about what we'd done in bed and I'd start feeling a bit flushed, then I'd become aroused and climax. In six months I was having 150 orgasms a day—and it has been as many as 200." 




She and her boyfriend split— and new partners struggle to keep up with her sex demands. "Often, I'll want to wear myself out by having as many orgasms as I can so they stop and I can get some peace," she said. 


2.The Man Who Can't Get Fat


Mr Perry, 59, can eat whatever he likes - including unlimited pies, burgers and desserts - and never get fat. He cannot put on weight because of a condition called lipodystrophy that makes his body rapidly burn fat.

He used to be a chubby child, but at age 12 the fat dropped off "almost over night". He initially tried to eat more to gain weight, but it had no effect. Mr Perry, of Ilford in Essex, endured a decade of tests before the illness was diagnosed. It finally emerged that his body produces six times the normal level of insulin. Doctors have admitted that the condition would be a "slimmer's dream".

3.The Man Who Doesn't Feel Cold
  

Dutchman Wim Hof, also known as the Iceman, is the man that swam under ice, and stood in bins filled with ice. He climbed the Mt. Blanc in shorts in the icy cold, harvested world records and always stands for new challenges. 


Scientists can't really explain it, but the 48-year-old Dutchman is able to withstand, and even thrive, in temperatures that could be fatal to the average person

4.The Boy Who Never Sleeps 



Rhett Lamb is often cranky like any other 3-year-old toddler, but there’s one thing that makes him completely different: he has a rare medical condition in which he can’t sleep a wink.

Rhett is awake nearly 24 hours a day, and his condition has baffled his parents and doctors for years. They took clock shifts watching his every sleep-deprived mood to determine what ailed the young boy. 


After a number of conflicting opinions, Shannon and David Lamb finally learned what was wrong with their child: Doctors diagnosed Rhett with an extremely rare condition called chiari malformation.

"The brain literally is squeezed into the spinal column. What happens is you get compression, squeezing, strangulating of the brain stem, which has all the vital functions that control sleep, speech, our cranial nerves, our circulatory system, even our breathing system," Savard said.


5. The Girl Who Is Allergic To Water

  
Teenager Ashleigh Morris can't go swimming, soak in a hot bath or enjoy a shower after a stressful day's work - she's allergic to water. Even sweating brings the 19-year-old out in a painful rash. 


Ashleigh, from Melbourne, Australia, is allergic to water of any temperature, a condition she's lived with since she was 14. She suffers from an extremely rare skin disorder called Aquagenic Urticaria - so unusual that only a handful of cases are documented worldwide.

6.The Woman Who Can’t Forget



That's the story of AJ, an extraordinary 40-year-old married woman who remembers everything.

McGaugh and fellow UCI researchers Larry Cahill and Elizabeth Parker have been studying the extraordinary case of a person who has "nonstop, uncontrollable and automatic" memory of her personal history and countless public events. If you randomly pick a date from the past 25 years and ask her about it, she’ll usually provide elaborate, verifiable details about what happened to her that day and if there were any significant news events on topics that interested her. She usually also recalls what day of the week it was and what the weather was like.

The 40-year-old woman, who was given the code name AJ to protect her privacy, is so unusual that UCI coined a name for her condition in a recent issue of the journal Neurocase: hyperthymestic syndrome. 

7.The Girl Who Eats Only Tic Tacs


 Meet Natalie Cooper, a 17-year-old teenager who has a mystery illness that makes her sick every time she eats anything. Well, almost anything. She can eat one thing that doesn’t make her sick: Tic tac mint!.For reasons that doctors are unable to explain, Tic tacs are the only thing she can stomach, meaning she has to get the rest of her sustenance from a specially formulated feed through a tube.

8.The Musician Who Cant Stop Hiccuping

  

Chris Sands, 24, from Lincoln, hiccups as often as every two seconds - and sometimes even when he is asleep. He has tried a variety of cures, including hypnosis and yoga, but nothing has worked. Mr Sands thinks his problem stems from an acid reflux condition caused by a damaged valve in his stomach. "If the acid levels are severe enough they are going to do keyhole surgery and grab part of my stomach and wrap it around the valve to tighten it," he said.

Mr Sands, who is a backing singer in the group Ebullient, said the condition has hampered his career as he has only been able to perform four times. In the next couple of weeks --as of the day of the report--, doctors at Nottingham's Queen's Medical Centre will put a tube into his stomach to monitor acid levels and decide if keyhole surgery is possible. 

9.The Girl That Collapses Every Time She Laughs



Kay Underwood, 20, has cataplexy, which means that almost any sort of strong emotion triggers a dramatic weakening of her muscles. Exhilaration, anger, fear, surprise, awe and even embarrassment can also cause sufferers to suddenly collapse on the spot.

Kay, of Barrow-upon-Soar, Leicestershire (UK), who was diagnosed with the condition five years ago, once collapsed more than 40 times in a single day. She said: "People find it very odd when it happens, and it isn't always easy to cope with strangers' reactions. " 


 
Like most cataplexy sufferers, Ms Underwood is also battling narcolepsy - a condition that makes her drop off to sleep without warning. Narcolepsy affects around 30,000 people in the UK and about 70 per cent of them also have cataplexy .

10.The Woman Who is Allergic to Modern Technology



For most people talking on a mobile phone, cooking dinner in the microwave or driving in a car is simply part of modern living in 21st century Britain. But completing any such tasks is impossible for Debbie Bird - because she is allergic to Cell Phones and Microwaves.

The 39-year-old is so sensitive to the electromagnetic field (emf) or 'smog' created by computers, mobile phones, microwave ovens and even some cars, that she develops a painful skin rash and her eyelids swell to three times their size if she goes near them. As a consequence, Mrs Bird, a health spa manager, has transformed her home into an EMF-free zone to try and stay healthy. 'I can no longer do things that I used to take for granted,' Mrs Bird said. "My day-to-day life has been seriously affected by EMF"
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Saturday, 21 August 2010

One Fact You Never Knew ( i Bet )



            SHARKS ARE IMMUNE TO ALL KNOWN DISEASES

Sunday, 15 August 2010

Miracle Man Walks Again

Miracle Man Walks Again


 He survived against all the odds; now Peng Shulin has astounded doctors by learning to walk again. When his body was cut in two by a lorry in 1995, it was little short of a medical miracle that he lived. It took a team of more than 20 doctors to save his life. Skin was grafted from his head to seal his torso but the legless Mr Peng was left only 78cm (2ft 6in) tall. Bedridden for years, doctors in China had little hope that he would ever be able to live anything like a normal life again. But recently, he began exercising his arms, building up the strength to carry out everyday chores such as washing his face and brushing his teeth.
Doctors at the China Rehabilitation Research Centre in Beijing found out about Mr Peng's plight late last year and devised a plan to get him up walking again. They came up with an ingenious way to allow him to walk on his own, creating a sophisticated egg cup-like casing to hold his body with two bionic legs attached to it. He has been taking his first steps around the centre with the aid of his specially adapted legs and a resized walking frame.


Wednesday, 21 July 2010

Sailing and Moving Rocks and Stones of Death Valley

The mysterious moving stones of the packed-mud desert of Death Valley have been a center of scientific controversy for decades. Rocks weighing up to hundreds of pounds have been known to move up to hundreds of yards at a time. Some scientists have proposed that a combination of strong winds and surface ice account for these movements. However, this theory does not explain evidence of different rocks starting side by side and moving at different rates and in disparate directions. Moreover, the physics calculations do not fully support this theory as wind speeds of hundreds of miles per hour would be needed to move some of the stones. 

Columnar Basalt cool lava

When a thick lava flow cools it contracts vertically but cracks perpendicular to its directional flow with remarkable geometric regularity - in most cases forming a regular grid of remarkable hexagonal extrusions that almost appear to be made by man. The size of the columns depends loosely on the rate of cooling; very rapid cooling may result in very small (<1 cm diameter) columns, while slow cooling is more likely to produce large columns. One of the most famous such examples is the Giant's Causeway on the coast of Ireland (shown above) though the largest and most widely recognized would be Devil's Tower in Wyoming. Basalt also forms different but equally fascinating ways when eruptions are exposed to air or water.

Blue Hole in Sea and Oceans

Blue holes are giant and sudden drops in underwater elevation that get their name from the dark and foreboding blue tone they exhibit when viewed from above in relationship to surrounding waters. They can be hundreds of feet deep and while divers are able to explore some of them they are largely devoid of oxygen that would support sea life due to poor water circulation - leaving them eerily empty. Some blue holes, however, contain ancient fossil remains that have been discovered, preserved in their depths.

World’s Biggest & Largest DESSERT "tiramisu "

A dozen chefs in France have laid claim to rustling up the world's largest Tiramisu dessert, weighing over a ton (1070 Kg+) and having to be stored in an ice rink.


                     "It has now been officially recognised by Guiness World Records"  

The cooks worked through the night at a food fair in Villeurbanne near Lyon, in order to complete the record attempt.
The dessert utilized:
  • 4,000 eggs
  • 300kg of mascarpone cheese
  • 60kg of cream
  • 180kg of biscuits
  • 12kg of chocolate
  • 5kg of cocoa powder
  • and 192 kg of sugar.
Weighing in at nearly 1,076kg (2,372 lb) the giant tiramisu - which means "pick me up" in Italian!!

Longest cell of Human body

Cells are of microscopic size but some of them are quit long though they still cannot be seen with naked eye.

  One of them is neuron. It is the longest cell of human body, motor neurons are about 4 ft 3 in (1.3 m) long. they have cell bodies in the lower spinal cord with axons that carry nerve impulses from the spinal cord down to big toe. Ofcourse the longest cell will be of the longest man of the world. Tags: longest human cell neuron nerve neuron fact unbelievable facts world facts animal facts hard fact animal facts human facts accidents world record dictionary sex facts fastest strongest longest dangerous horrible love and romance facts

Most active Muscle of Human Body


The most active Muscle of the human body is the muscle of the eye. It has been estimated that it moves about more than 100,000 times a day. And the more incrible thing is that most of these movements which are quit rapid takes place when we are sleeping i.e; when during the sleeping phase.

The Worlds Really A Small Place

The following pictures are one of the best visual pictures that I have ever seen, that shows pretty clearly just how insignificant earth actually is. If you’ve ever had trouble grasping the true sizes involved in astronomy and the size of earth compared to other planets and stars, then here u can make them clear. The scales involved are mind boggleing. You just won’t BELIEVE how huge and mind blowingly big they are. Be ready to feel SMALL :) 


Here are the inner planets, the small rocky bodies cloe to the sun and Earth looks pretty big here. Our neighbour is almost our size, but we are the biggest of the bunch. 


As we travel farther out, we encounter gas giants, huge balls of gas that are make our inner planets seem so small in comparison.Even Pluto is barely visible here.







Arcturus is one of the brightest stars in the sky, and you can see that size is one reason why in comparison to our sun. Notice that Earth isn’t even visible at this scale, and Jupiter, the giant among planets in our system, is just a single pixel o


But even Arcturus is dwarfed by the super-giants, massive red stars that would swallow huge chunk of our solar system. Antares and Betelgeuse, if they were placed at our Sun’s location, would easily envelope Mercury, Venus, Earth and Mars … Antares’ So u see how small we r n how small r our dreams of having GREAT PALACES n GIANT KINGDOMS as compared to the UNIVERSE!!!