While nanotechnology in general provides a smooth, unobtrusive, environment for those living with and using it, there are occasional exceptions. Sometimes as a result of conflict or combat, sometimes as a result of malfunctions or carelessness, even a nanotechnology filled environment can become uncomfortable for the sophonts living within it.
Image from Wiki Commons
Angelnet Rain: One side effect of large amounts of utility fog or other free-floating nanites in a planetary atmosphere has come to be called 'Angelnet Rain'. Effectively, the nanite or microbot acts as the seed for a raindrop, with water coalescing out of the atmosphere onto its surface. This tends (in poorly regulated angelnets) to lead to high degrees of mist and fog at ground level, up to the point where the nanites stop functioning. It can be an interesting phenomenon to fly into an angelnetted city from above the angelnetting, and seeing large, odd-shaped 'columns' of fog, only later to realize that what you've seen is the angelnet rain surrounding various buildings.
Black Fog: A common byproduct of truly massive nanotic warfare, Black Fog is a common side-effect of extremely large numbers of free-range (and usually disabled) nanites. These nanites are either aggressor (khaki, black or grey) nanites and defender (blue) nanites, or occasionally clashing batches of blue or khaki nanites. It is a dangerous condition. It can lead to particulate damage to local biont's lungs and breathing mechanisms, or lead to reduced efficiency in air-breathing power systems. In extreme cases, it can lead to practical blindness.
Black Clouds: Another form of Black Fog, but often one which occurs at higher altitudes. It may precede or follow a bad batch of Black Fog.
Text by John B
Initially published on 26 August 2004.