User:Abdiel Kavash/Pollution
Many machines in GregTech generate pollution while running. If left unchecked, pollution can cause various negative effects, such as affecting players with debuffs, destroying plant life, or even damaging blocks. Fortunately, pollution dissipates over time, and there are several machines that can clean up pollution at a much faster rate.
Basics
Pollution is a chunk-based effect. Every Minecraft chunk has an associated pollution amount, measured in units called gibbl. This means that every block in the same chunk is affected by pollution equally, and it does not matter where in the chunk pollution-generating machines are. Specifically, there is no difference between having your machines out in an open field, or hidden in a closed-off cave. They will all contribute to the pollution in their chunk in the same way.
If pollution in a chunk becomes too high, it will slowly spread to the four adjacent chunks. Pollution also slowly dissipates over time by itself