As the world population is risen so fast in the last 100 years. Will we have enough resources to be able to feed the many. Many arguments are made in favour of Genetically Midified produce (GM). The study by Michael Pollan and book Food Rules shows that there’s hope.
He also covers the constant concern about the price of food.

There is a renewed hope that we can reforest and regrow many neglected and barren places. Permaculture is one possible answer to repair the world through reforestation.