Hunger
About 829 million people (1 in 10 people globally) are undernourished (lacking protein and/or calories).
Causes

* Numbers & methodology of the above image
* Food production-consumption geography
The causes of hunger can be understood from both a material perspective and a socioeconomic perspective, which are two sides of the same coin:
Inefficiencies
Even though farms produce more than enough food crops to feed the world, too many of these crops are used inefficiently...
- as animal feed (farm animals eat more food than they produce)
- as biofuel (burned for energy - this is not a scalable alternative to fossil fuels)
- and in food that goes to waste (or spoils due to improper storage)
As a result, there isn't enough to go around (globally). The poorest of the poor are the first to suffer from this.
Wars & conflicts
This section has not been filled in yet.
Solutions / Actions to take
- Make the food supply more plant-based - See why
- Stop food waste - richer countries need the most change
- Stop biofuels
- Improve crop yields - poorer countries need the most change
If you'd like to add something to this list, leave a comment on the talk page.