All bitcoins now in circulation were originally created by this process, which is known as mining.

FORBES: Four Reasons Bitcoin Is Worth Studying

"The Republic of Congo affirms that she is able to take up her responsibilities under the Kimberly Process and is ready to contribute with neighbouring countries to curb the problematic circulation of rough diamonds, " Mr Mvouo said.

BBC: NEWS | Africa | Congo anger at diamond suspension

Unfortunately, because of the nature of air circulation, any downward-pointing force created aerodynamically generates a backward-pointing resistance in the process just as an increase in the lift of an aircraft wing as the flaps are lowered for take-off or landing creates more drag in the process, forcing the pilot to open the engine throttles to overcome the extra wind resistance.

ECONOMIST: CAR DESIGN