Other issues threaten the global supply of food, including water scarcity, overfishing, soil erosion, energy depletion and climate change. It looks like the world could be running head-first into a Malthusian check.
Many wrote Thomas Malthus’ theories off decades ago, however it can be argued that massive cheap energy discoveries merely delayed the inevitable by subsidizing food production. After-all, who can argue that exponential growth can last forever?
Science examines these challenges and suggests an approach feeding a world population of 9 billion.
