Practice - Current Practices in need of Critical Appreciation
He who lives in harmony with himself lives in harmony with the universe. - Marcus Aurellius
Globally we are responsible for ~50 billion tons of greenhouse gases entering our atmosphere and oceans each year, and since the late 19th century we have raised the CO2 concentration of our atmosphere from ~280ppm to ~418ppm, and the average global temperature by ~1.3 °C,
Meat and fish consumption results in the culling of ~150 billion animals annually. We use ~12x as much land to produce meat, dairy and feedstock than we would otherwise use to feed one person on a plant-based diet, and it takes ~1,800 gallons of water to produce one pound of beef.
The human immune system is compromised by excessive consumption of meat, dairy, refined carbohydrates, and the additives in processed foods, leading to health outcomes that are degraded compared to people living in the Blue Zones, where healthspan almost equals lifespan, and life expectency is ~10 years longer than the general population. Their diet is mostly plant-based, and there are negligible deaths from the top four causes of mortality in the developed world.
Medical doctors receive ~20 contact hours of nutritional instruction in four years of medical school (in the US) and yet ~75% of the disease burden, and ~85% of all deaths, are related to diet and lifestyle. Nothing is more important than nutrition for optimal mental and physical health.
Agricultural monoculture progressively degrades the health of our topsoil, increasing water consumption and pollution via run-off, and is liable to crop failure simply due to lack of diversity of genetic material. Many food additives and pollutants cause inflammation, disrupting the immune and endocrine systems; an immune system that would otherwise eliminate ~10K cancer cells per day.
Emissions in electricity and heat generation, are generally made by machines that use fossil fuels as the energy source. Power plants cannot simply be turned off and on again; there are costs to overproducing to meet peak demand. There is no widespread adoption of carbon-capture technologies. Power plant operating efficiency is ~33%, much less if you account for all the losses; ~2% for a light bulb. Transportation does a little better, the overall automobile efficiency from crude oil to transmission, is ~10%.
We are over-fishing the oceans and eliminating bycatch in such quantity that the global fishing industry is expected to collapse by ~2050. Algae and phytoplankton produce ~50% of the atmospheric oxygen; without fishstock to provide important nutrients, this ability may too be compromised. Humans have evolved to breath an atmosphere of ~21% oxygen +/-2%.
We were believed to be in the interglacial Holocene Era, heading for a new ice age. Now, in the Athropocene Era, we are responsible for the melting of all land ice, thought to be inevitable, and expected to increase sea-level by ~200ft; and ~6ft (estimates vary widely) by the end of the century. This is significant because many of our population centers are located on river estuaries, with ~10ft elevation.
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