“It took humans 10,000 years to learn how to grow most of the crops we now take for granted. Along the way, we despoiled most of the land we worked, often turning verdant, natural ecozones into semi-arid deserts. Over 60% of the human population now lives vertically in cities. The time has arrived for us to learn how to grow our food that way, too. If we do not, then in just another 50 years, 3 billion people will surely go hungry, and the world will be a very unpleasant place in which to live.” – The Vertical Farm Project
Seems especially more critical to me if more and more of the population lives to their teens… the second set that is!
“He estimates the world’s population of super-centenarians at 250 and growing, in part because doctors, medicines and nutrition have prolonged what experts call the human health span — the period between birth and the cascade of medical problems that mark the end of life.” – Hitting the Big Eleven-O