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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 ]


Genetics,Chemistry,Life

The Intelligence of Plants

November 23, 2013 - [ 1 part ]
We are living in exceptional times. Scientists tell us that we have 10 years to change the way we live, avert the depletion of natural resources and the catastrophic evolution of the Earth's climate.  The stakes are high for us and our children. Everyone should take part in the effort, and HOME has been conceived to take a message of mobilization out to every human being.  For this purpose, HOME needs to be free. A patron, the PPR Group, made this possible. EuropaCorp, the distributor, also pledged not to make any profit because Home is a non-profit film.  HOME has been made for you : share it! And act for the planet.

History,Science,Geology,Genetics,Chemistry,Life,Zoology

Home

We are living in exceptional times. Scientists tell us that we have 10 years to change the way we live, avert the depletion of natural resources and the catastrophic evolution of the Earth's climate. The stakes are high for us and our children. Everyone should take part in the effort, and HOME has been conceived to take a message of mobilization out to every human being. For this purpose, HOME needs to be free. A patron, the PPR Group, made this possible. EuropaCorp, the distributor, also pledged not to make any profit because Home is a non-profit film. HOME has been made for you : share it! And act for the planet.
October 7, 2013 - [ 1 part ]
By the year 2050, the world's population will reach nine billion. The demand on the world's resources - energy, first and foremost - will be severe. But the road from now to then doesn't need be bleak. There is a path to a future filled with opportunities, with amazing individuals and extraordinary projects leading the way.

Science,The Future,Geology,Chemistry,Economics

Future of Energy 2050

By the year 2050, the world's population will reach nine billion. The demand on the world's resources - energy, first and foremost - will be severe. But the road from now to then doesn't need be bleak. There is a path to a future filled with opportunities, with amazing individuals and extraordinary projects leading the way.
May 15, 2013 - [ 1 part ]
There was a time, not so long ago, when science seemed to understand how the universe worked. Everything us, the Earth, the stars and even exotic-sounding supernovae was made of atoms which were all created at time-zero: the Big Bang. In between the atoms was nothing, a void: quite literally, 'space'.  But recently things have started to unravel. There is, it seems, a lot more to the universe than meets the eye. According to the best estimates, we only really know what about 4% of it is made of. But if only 4% is made of atoms, what about the rest? The rest is made of mysterious entities about which very little is understood, with equally mysterious names: dark matter and dark energy.

Science,Physics,Chemistry,The Universe

Most of our Universe is Missing

There was a time, not so long ago, when science seemed to understand how the universe worked. Everything us, the Earth, the stars and even exotic-sounding supernovae was made of atoms which were all created at time-zero: the Big Bang. In between the atoms was nothing, a void: quite literally, 'space'. But recently things have started to unravel. There is, it seems, a lot more to the universe than meets the eye. According to the best estimates, we only really know what about 4% of it is made of. But if only 4% is made of atoms, what about the rest? The rest is made of mysterious entities about which very little is understood, with equally mysterious names: dark matter and dark energy.
March 14, 2012 - [ 5 parts ]
Six months after the explosions at the Fukushima nuclear plant and the release of radiation there, Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation.

Science,The Future,People,Places,Physics,Chemistry

Fukushima Disaster

Six months after the explosions at the Fukushima nuclear plant and the release of radiation there, Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation.
February 13, 2012 - [ 1 part ]
The conspiracy of 1605

History,Science,People,Physics,Chemistry,Religion

Guy Fawkes

The conspiracy of 1605
November 5, 2011 - [ 8 parts ]


History,Chemistry

Beer Brewing Documentary

August 23, 2011 - [ 6 parts ]
A tiny, often overlooked country in the horn of Africa, Eritrea is a shining example of how religious and cultural strife can be overcome through a shared sense of nationhood. However, Eritrea's future is jeopardized by a looming border conflict with neighboring Ethiopia. 

People,Places,Chemistry,Civilization,Religion

Eritrea, Africa

A tiny, often overlooked country in the horn of Africa, Eritrea is a shining example of how religious and cultural strife can be overcome through a shared sense of nationhood. However, Eritrea's future is jeopardized by a looming border conflict with neighboring Ethiopia.
August 11, 2011 - [ 1 part ]