Food
Problems
The world's food-related problems include:
- Hunger & malnutrition
- Nearly 900 million people lack calories or protein (1 in 9 people worldwide).
- Even more people lack vitamins & minerals, even if they get enough calories & protein.
- Environmental impact
- Habitat loss, due to agriculture using so much land.
- Methane emissions, particularly from cows.
- CO2 emissions from fertilizer production.
- Pollution from pesticides and fertilizers.
- Animal cruelty
- Particularly bad in factory farms, which are the source of most animal products.
These problems are magnified by inefficiency:
Solutions
Things that can solve all 4 problems, with the biggest impact:
- Making food more plant-based
(...)( not necessarily 100% vegan, but reducing animal consumption by more than half ) . - Improving crop yields, especially in poorer countries.
- Reducing food waste.
- Not burning edible foodstuffs as biofuel.
Things that also help:
- Gardening and suburban farming.
- Regenerative farming of crops, as long as it doesn't reduce crop yields.
Things that might help in the future:
Things that don't help:
- Vertical farming
- More grass-fed beef
- Organic monoculture
Q&A
Unanswered
How much animal protein could be produced from pasture only, if no crops were ever fed to animals?
How much CO2 is released for every km^2 of deforestation?
How much CO2 is released for every km^2 of destroyed grasslands?
How much carbon does every km^2 of newly-grown forest sequester per year?
How much carbon does every km^2 of newly-grown grasslands sequester per year?
Bottom line
All 8 billion people could be well-fed & healthy, without destroying the planet, and without anywhere near as much harm to animals. But all of this requires both personal changes and systemic changes.