Part 2/6:
Smalley estimated that it would take 60 terawatts of energy to support a global population of 10 billion people living at a standard similar to the United States. This is a daunting task, but Friedmann points out that the Earth receives 163,000 terawatts of energy from the sun, with 80,000 terawatts arriving in a form that can be used, such as wind and solar.
Abundant, Sustainable, and Cheap Energy