vertical farms offer the clearest path toward ending hunger and malnutrition. These farms already have the ability to increase the amount of food grown per harvest by orders of magnitude and increase the number of possible harvests by factors of ten. They have the potential to produce all of this food while simultaneously requiring 80 percent less land, 90 percent less water, 100 percent fewer pesticides, and nearly zero transportation costs.

Thousands of years ago, it was only kings, pharaohs, and emperors who had the ability to solve large-scale problems. Hundreds of years ago, this power expanded to the industrialists who built our transportation systems and financial institutions. But today, the ability to solve such problems has been thoroughly democratized. Right now, and for the first time ever, a passionate and committed individual has access to the technology, minds, and capital required to take on any challenge. Even better, that individual has good reason to take on such challenges. As we will soon see, the world's biggest problems are now the world's biggest business opportunities. This means, for exponential entrepreneurs, finding a significant challenge is a meaningful road to wealth. Ultimately, as I teach at Singularity University (much more on this later), the best way to become a billionaire is to solve a billion-person problem.

advantage. "People think that bold projects don't get funding because of their audacity. That's not the case. They don't get funded because of a lack of measurability. Nobody wants to make a large up-front investment and wait ten years for any sign of life. But more often than not, if you can show progress along the way, smart investors will come on some pretty crazy rides.