
A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
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THE WIND SAIL AND… WHEEL
Historians say that the sail appeared on land about four thousand years ago! Fiction? No - there is documentary evidence. In 1953 the Italian archaeological expedition at the excavations...
THE CEILING OF LEAVES
Is it possible to make sound insulation of the ceiling? For this purpose, will serve a suspended acoustical ceiling. It performs several functions, it reduces the energy of the reflected...