"Some of them." She circles China with a finger— "The People's Republic of China." She puts a rather sarcastic bent into 'Republic'. "Twenty percent of Earth's population lives there." Her finger drifts west a little. "India, sixteen percent." West again. "Europe—a lot of small and medium countries—eleven percent." West again, across the ocean. "North America, with Canada, the United States, and Mexico, eight percent. Total population of the world right now's about seven billion."