Tuesday, 30 September 2014
Monday, 10 March 2014
Cracking your knuckles does not actually hurt your bones or cause arthritis
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
Cracking your knuckles (or any of your joints) can have therapeutic benefits. When you crack one of your joints you are pulling the bones that are connected at the joint apart from each other. This process stimulates your tendons, relaxes your muscles, and loosens your joints. Chiropractors do this for spinal joints when your back is sore and stiff, but you can do this on your own for your knuckles, toes, knees, neck, etc.
Unfortunately, there can be too much of a good thing. Cracking your knuckles will never lead to arthritis (despite what your mom keeps telling you), but scientists have discovered that it can cause tissue damage in the affected joints. Knuckle-cracking pulls your finger bones apart which stretches your ligaments. Too much stretching of your ligaments will cause damage to your fingers akin to the arm injuries sustained by a baseball pitcher who throws too many pitches. In addition to making your hand really sore, this ligament damage can also result in reduced grip strength.
How does this work? Your joints, the places in your body where you can bend, are where your bones intersect and are held together by ligaments. These joints are surrounded by a liquid called synovial fluid. When you stretch your ligaments by pulling the bones apart to crack your knuckles a gas in the synovial fluid escapes and turns into a bubble. This process is called cavitation. Cavitation ends when the bubble eventually bursts, producing that popping sound we know and love. After that, your joints won't be able to crack for another 25-30 minutes while the gas gets reabsorbed into the synovial fluid.
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Cracking your knuckles (or any of your joints) can have therapeutic benefits. When you crack one of your joints you are pulling the bones that are connected at the joint apart from each other. This process stimulates your tendons, relaxes your muscles, and loosens your joints. Chiropractors do this for spinal joints when your back is sore and stiff, but you can do this on your own for your knuckles, toes, knees, neck, etc.
Unfortunately, there can be too much of a good thing. Cracking your knuckles will never lead to arthritis (despite what your mom keeps telling you), but scientists have discovered that it can cause tissue damage in the affected joints. Knuckle-cracking pulls your finger bones apart which stretches your ligaments. Too much stretching of your ligaments will cause damage to your fingers akin to the arm injuries sustained by a baseball pitcher who throws too many pitches. In addition to making your hand really sore, this ligament damage can also result in reduced grip strength.
How does this work? Your joints, the places in your body where you can bend, are where your bones intersect and are held together by ligaments. These joints are surrounded by a liquid called synovial fluid. When you stretch your ligaments by pulling the bones apart to crack your knuckles a gas in the synovial fluid escapes and turns into a bubble. This process is called cavitation. Cavitation ends when the bubble eventually bursts, producing that popping sound we know and love. After that, your joints won't be able to crack for another 25-30 minutes while the gas gets reabsorbed into the synovial fluid.
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14000 Years Old Baltic Sea 'UFO' Anomaly
Wednesday, 26 February 2014
Sunday, 23 February 2014
Largest mollusks on Earth
These bottom-dwelling behemoths are the largest mollusks on Earth, capable of reaching 4 feet (1.2 meters) in length and weighing more than 500 pounds (227 kg). They live in the warm waters of the South Pacific and Indian Oceans.
Giant clams achieve their enormous proportions by consuming the sugars and proteins produced by the billions of algae that live in their tissues. In exchange, they offer the algae a safe home and regular access to sunlight for photosynthesis, basking by day below the water's surface with their fluted shells open and their multi-colored mantles exposed. They also use a siphon to draw in water to filter and consume passing plankton.
Giant clams have a wildly undeserved reputation as man-eaters, with South Pacific legends describing clams that lie in wait to trap unsuspecting swimmers or swallow them whole. No account of a human death by giant clam has ever been substantiated.
Giant clams achieve their enormous proportions by consuming the sugars and proteins produced by the billions of algae that live in their tissues. In exchange, they offer the algae a safe home and regular access to sunlight for photosynthesis, basking by day below the water's surface with their fluted shells open and their multi-colored mantles exposed. They also use a siphon to draw in water to filter and consume passing plankton.
Giant clams have a wildly undeserved reputation as man-eaters, with South Pacific legends describing clams that lie in wait to trap unsuspecting swimmers or swallow them whole. No account of a human death by giant clam has ever been substantiated.
Motorcycle-loving man
A motorcycle-loving man's family has fulfilled his dying wish — to be buried astride his beloved Harley-Davidson encased in a see-through casket.
But it wasn't easy. The project required an extra-large cemetery plot to accommodate a Plexiglas casket for Billy Standley and his hulking custom-painted 1967 Electra Glide cruiser. Five embalmers worked to prepare his body with a metal back brace and straps to ensure he'll never lose his seat.
But it wasn't easy. The project required an extra-large cemetery plot to accommodate a Plexiglas casket for Billy Standley and his hulking custom-painted 1967 Electra Glide cruiser. Five embalmers worked to prepare his body with a metal back brace and straps to ensure he'll never lose his seat.
Google reveals what people really think about Europe and Asia
Google autocomplete reveals stereotypes about other countries in Europe and Asia.
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For those who don't know, Google keeps tab on the questions asked most often about various topics. When you type a question in the search box, the search engine shows you the most popular queries associated with the topic.
On the map below are the top questions that come up when you start to ask Google: "Why is [country name]?" about Asian countries. A separate map also shows the responses for European countries.
For those who don't know, Google keeps tab on the questions asked most often about various topics. When you type a question in the search box, the search engine shows you the most popular queries associated with the topic.
On the map below are the top questions that come up when you start to ask Google: "Why is [country name]?" about Asian countries. A separate map also shows the responses for European countries.
Quadruplets with Numbered hair
Six-year-old quadruplets have had numbers shaved into their hair before they start school for their first time. Their parents decided to mark them with 1, 2, 3, 4 on their heads to make it easier for teachers and classmates to tell them apart in Shenzhen, south China's Guangdong Province
Mohandas Gandhi's letter to Adolf Hitler, 1939
India's figurehead for independence and non-violent protest pleads with the leader of Nazi Germany
23 July 1939
As tensions mounted in Europe following Germany’s occupation of Czechoslovakia, Mohandas Gandhi, the famously non-violent leader of the Indian independence movement, wrote a clear and concise plea for Hitler to avoid war, but it never reached its intended recipient because of an intervention by the British government. Just over a month later, the world looked on in horror as Germany invaded Poland.
23 July 1939
As tensions mounted in Europe following Germany’s occupation of Czechoslovakia, Mohandas Gandhi, the famously non-violent leader of the Indian independence movement, wrote a clear and concise plea for Hitler to avoid war, but it never reached its intended recipient because of an intervention by the British government. Just over a month later, the world looked on in horror as Germany invaded Poland.
Most Expensive book in history
Codex Leicester is the most expensive book in history.
The Codex Leicester is a collection of largely scientific writings by Leonardo da Vinci.
Bill Gates bought the book at Christie's auction house on 11 November 1994 in New York for $US30,802,500.
(Below is the page of the Codex Leicester)
The Codex Leicester is a collection of largely scientific writings by Leonardo da Vinci.
Bill Gates bought the book at Christie's auction house on 11 November 1994 in New York for $US30,802,500.
(Below is the page of the Codex Leicester)
Did you know Why do ears ring sometimes ?
Ringing of ears is also known as Tinnitus (Latin for ringing).Loud noises like music ,fireworks damages hair cells in the inner ear.The ends of these hair cells get broken due to high level of noise.
These hair cells are responsible for taking messages to the brain ,but once they are damaged they false signals to the brain causing ringing sound.These usually grow back in 24 hours.Tinnitus can also be caused by ear infections.
Did U Know Facebook Founder And Wife donated more than $970 million to charity
Facebook founder Mark Zuckerberg and his wife, Priscilla Chan, donated more than $970 million to charity in 2013, topping the Chronicle of Philanthropy's list of generous benefactors.
Top 50 benefactors made $7.7 BILLION in donations.
Top 50 benefactors made $7.7 BILLION in donations.
THE SILFRA RIFT - DIVE BETWEEN 2 CONTINENTS
Officially known as the Silfra Tectonic Fissure, this freshwater rift between continents is not only geologically intriguing, it also happens to stunningly beautiful.
The rift sits in the gap between the North American and Eurasian continental plates, where an imperfect seam allows explorers into the watery depth an opportunity to dive towards the center of the Earth. The clear waters of Þingvallavatn Lake in the Þingvellir National Park attract divers from around the world to experience the unique feeling of diving between worlds, where visibility is often as good as 300 feet between lava rock cliffs. Flights from Toronto to Reykjavik take explorers to this volcanic wonder daily, where they can dive in the luminous waters, adventure in customized off road vehicles, and enjoy the dramatic, arctic landscape of the rest of Iceland's Thingvellir National Park.
The rift sits in the gap between the North American and Eurasian continental plates, where an imperfect seam allows explorers into the watery depth an opportunity to dive towards the center of the Earth. The clear waters of Þingvallavatn Lake in the Þingvellir National Park attract divers from around the world to experience the unique feeling of diving between worlds, where visibility is often as good as 300 feet between lava rock cliffs. Flights from Toronto to Reykjavik take explorers to this volcanic wonder daily, where they can dive in the luminous waters, adventure in customized off road vehicles, and enjoy the dramatic, arctic landscape of the rest of Iceland's Thingvellir National Park.
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