"I didn't force anyone to give me money," the 17-year-old told NBC News. "Why is my business illegal?"

By now we've all heard about it. Facebook has a fake news problem, a rampant epidemic of phony and outrageous headlines in which a fraction-of-a-penny-per-click gets traded for lies.

The growing number of metropolitan cities that exceed 10 million people in population and will soon reach the level of 30 million people require clean energy as an indispensable urban-policy planning factor.