For a long time, I have had a blog on world hunger:
Hunger Math blog
The blog began by covering the topic of world hunger, based on my book: Hunger Math: world hunger by the numbers. The book is not an easy read. It contains a lot of data and calculations, analyzing what causes world hunger, and proposing various solutions.
Subsequently, I used that same blog to write about nutrition, staple crops, gardening, and related ideas.
Now I anticipate that the world is heading toward a series of disruptions to the food supply, which will result in food shortages and eventually famine in some places. For information on that topic, please consider reading