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.
Alas, the size of this year’s ozone hole over Antarctica was among the largest ever. And the remaining ozone layer was exceptionally thin.
there is a direct and powerful correlation between the rise of the human population and the rise of CO2 in Earth’s atmosphere during the past few decades.
Growing forests remove CO2 from the atmosphere, mitigating the global warming problem brought on by fossil fuel combustion.
Short of eating endangered species, eating beef is probably the worst choice you can make vis-à-vis sustainability of the human enterprise on the planet