His literary focus primarily revolves around addressing existential risks to humanity, with notable works such as "The Coming Famine," "Surviving the 21st Century," "Food or War," and "How to Fix a Broken Planet.
Calling for a reevaluation of societal beliefs and values, Cribb urged the exercise of both wisdom and foresight in addressing looming crises.
He described the detrimental effects of this centralization, including poor diets, vulnerable food chains, and environmental degradation caused by unsustainable farming practices.
Cribb also talked about food waste at various stages of the supply chain, from transportation to consumer habits, pointing out the inefficiencies and lost nutrients.
In 2019 he co-founded the Council for the Human Future to raise global awareness of the growing existential crisis, comprising ten catastrophic risks, and help devise solutions to them all.