Arctic all-terrain vehicle in Russian forests

Arctic all-terrain vehicle in Russian forests

An Arctic all-terrain vehicle on pneumatic rollers, produced in the 90s, found itself in an unusual environment. The car was tested not in the snowy expanses of the North, but in normal...
Is white color required for an airplane?

Is white color required for an airplane?

With military aircraft everything is clear: they are painted to match the color of the sky so that they are less noticeable from the ground. But why are most civil aircraft white? If...