I am not at all worried about the world running out of oxygen anytime soon.
Sustainability will not be achieved with rising human population and increasing resource use.
The advent of fluoridated water would seem to be a good example of better living through biogeochemistry.
When it’s gone, it will be very difficult to supply phosphorus to crops without major expense, and there is no substitute.
Global warming may beget drastically more global warming, if we ever destabilize the pool of methane clathrates that are buried in polar regions.
Copper has been extracted from less and less attractive ores since Biblical times, yet we have not run out.
Global survey of restoration projects found only 25% of the ecosystem services provided by nature were found in the restored systems.
With liberal assumptions, the maximum apparent rate of carbon sequestration in biochar is only about 2% of the current annual emissions of carbon, as carbon dioxide, to the atmosphere from fossil fuel combustion
Annually we spread about 20 million tons of road salt in the U.S., and we’ve been doing it since the late 1930s.
Doing nothing about climate change will make us look like a ship of fools.