Technology

Only one flying example of the aircraft was built.

The Internet is used by more than 4,9 billion people, which makes up almost 64 percent of all humanity.

An-225 consumes about 18 tons of fuel during an hour of flight.

As recently as 2009, only 0.7 percent of Internet traffic came from mobile devices, today it is more than 50 percent.

Oil lamps have been displaced by electricity.

After an unsuccessful first attempt to use kerosene in a structurally unsuitable oil lamp, Łukasiewicz and the tinsmith Bratkowski constructed a prototype kerosene lamp.

The Three Gorges Dam causes a delay in the rotation of Earth.

Tungsten steel contains 2% to 18% of this element. It is extremely resistant to heat, corrosion and wear.

Almost 300 million new users join social media every year.

Mriya was flown on 21st December 1988.