Providing secret air operations is an important problem.
Specific example of proper use of resources.
A new “perpetual motion”?
How to extract a cutlet from a frying-pan?
You feel sleepy but you should not on any account sleep. What is to be done?
“Every man has a fool in his sleeve.”
Spy technologies at the service of ordinary people.
How can a lighter-than-air solid material be created?
New gold mining method.
In endoscopic surgery, it is not easy to properly suture through a small hole.
A great Russian fairy tale hero Dobrynya went to bathe in the Puchai-river... (from a Russian fairy tale)
The main purpose of the first space flights was to prove their possibility in principle. Each flight was a great event. But as space flights became more and more trivial ...
In the middle of the 19th century, one Russian industrialist bought a steam-engine...
How to work with a mouse when a notebook is lying on a tip table in an airplane.