0 – Calm, with no wind at all. Normally smoke from a chimney will come out at an angle or horizontally, but here the smoke will rise vertically. This happens quite rarely. 1 – Light air, winds of 1-2 ...

The Kardashev Scale, first proposed by Russian astronomer Nikolai Kardashev, measures the technological advancement of civilizations by the amount of energy they can harness and use. In its original ...