The earth spins around the sun at 30 km/sec. The habitable atmosphere on this planet extends 6 km into space and is composed of distinct layers. The troposphere extends upward from the earth to a height of about 8 km at the poles, to about 11.3 km in mid-latitudes, and to about 16.1 km at the equator. The air in the troposphere is in constant motion, with both horizontal and vertical air currents. As we exert ever increasing control we inevitably invite ever increasing chaos.

The planetary boundaries framework defines a safe operating space for humanity based on the intrinsic biophysical processes that regulate the stability of the Earth system. From global warming to the biosphere and deforestation, from pollutants and plastic to nitrogen cycles and freshwater: Six of nine planetary boundaries are being crossed, while simultaneously pressure in all boundary processes is increasing.