Earth scale engineering
Tampering with the atmosphere
Aka geoengineering where geo refers to whole Earth scale.
Tampering with the lithosphere
Aka Earth scale geoengineering where geo refers to geological not the Earth scale aspect.
This is confusing this "Earth scale engineering" as this pages title.
- Geoengineering mesh
- deep drilling, underground working, mining, …
at such an enormous global scale that has impact on the Earth so big
that there might be a non-passive reaction.
Tampering with the biosphere
- e.g. removal of excessive nitrates form the oceans (for attemp tof repair of dead zones)
Tampering with the Hydrosphere
- CO2 levels would fall under the atmosphere
- Enormously large scale tampering with global seawater salinity levels could be one far term upcoming concern
Extraterrestrial
Best canditates are bodies with dense building material atmospheres bathed in intense sunlight.
You may guess which of the eight known nondwarfplanets in our solar system is paradise for APM technology - (here's the solution).