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A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return. The hole is called 'black' because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics. 

Science,Physics,Chemistry,The Universe

Inside a Black Hole

A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return. The hole is called 'black' because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics.
August 29, 2014 - [ 1 part ]
Gold is a chemical element with the symbol Au and atomic number 79. It is a dense, soft, malleable, and ductile metal with an attractive, bright yellow color and luster that is maintained without tarnishing in air or water. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements, solid under standard conditions. The metal therefore occurs often in free elemental (native) form, as nuggets or grains in rocks, in veins and in alluvial deposits. Less commonly, it occurs in minerals as gold compounds, such as with tellurium as calaverite, sylvanite and krennerite.

History,Science,Places,Geology,Chemistry,The Universe,Economics

Gold

Gold is a chemical element with the symbol Au and atomic number 79. It is a dense, soft, malleable, and ductile metal with an attractive, bright yellow color and luster that is maintained without tarnishing in air or water. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements, solid under standard conditions. The metal therefore occurs often in free elemental (native) form, as nuggets or grains in rocks, in veins and in alluvial deposits. Less commonly, it occurs in minerals as gold compounds, such as with tellurium as calaverite, sylvanite and krennerite.
August 29, 2014 - [ 1 part ]
Whether dictated by the need for speed, population density or a host of other factors, the biological world resolves and evolves around size.

Science,Genetics,Life,Zoology

Evolution of Shape

Whether dictated by the need for speed, population density or a host of other factors, the biological world resolves and evolves around size.
January 28, 2014 - [ 1 part ]
Skin is absolutely amazing, far more complex and versatile than we ever give it credit for. It makes up 16% of your body weight is the largest organ in the human body, allows birds to fly and mammals to nurse their young and provides a lifelong defense against predators and parasites alike.

Science,Genetics,Life,Zoology

Evolution of Skin

Skin is absolutely amazing, far more complex and versatile than we ever give it credit for. It makes up 16% of your body weight is the largest organ in the human body, allows birds to fly and mammals to nurse their young and provides a lifelong defense against predators and parasites alike.
January 28, 2014 - [ 1 part ]
It doesn't just take willpower to survive, it takes guts. Life needs energy to exist and almost all animals get their energy in the same way, with a built in power plant, a digestive system that turns food into fuel.

Science,Genetics,Life,Zoology

Evolution of Guts

It doesn't just take willpower to survive, it takes guts. Life needs energy to exist and almost all animals get their energy in the same way, with a built in power plant, a digestive system that turns food into fuel.
January 28, 2014 - [ 1 part ]
Seeing is believing, not to mention evading, and surviving. Learn how the eyeball evolved from ancestors of jellyfish who developed light sensitive cells to the unique adaptations that allowed primates to better exploit their new habitat, while the ability to see colors helped them find food.

History,Science,Genetics,Life,Zoology

Evolution of Eyes

Seeing is believing, not to mention evading, and surviving. Learn how the eyeball evolved from ancestors of jellyfish who developed light sensitive cells to the unique adaptations that allowed primates to better exploit their new habitat, while the ability to see colors helped them find food.
January 28, 2014 - [ 1 part ]
Speed can often mean the difference between life and death in the animal kingdom. Some animals have evolved into championship flyers, swimmers and runners. What are the forces that create this need for speed and how do animal bodies adapt.

History,Science,Genetics,Life,Zoology

Evolution of Speed

Speed can often mean the difference between life and death in the animal kingdom. Some animals have evolved into championship flyers, swimmers and runners. What are the forces that create this need for speed and how do animal bodies adapt.
January 28, 2014 - [ 1 part ]


Science,Places,Zoology

Hippos

January 7, 2014 - [ 1 part ]
Stephen Hawking

Science,People,Physics,The Universe

Master Of The Universe

Stephen Hawking
January 4, 2014 - [ 1 part ]


Science,The Future,Places,Geology,Physics

Global Flooding in the next few Years

December 28, 2013 - [ 1 part ]