It is massively larger than 11 million illegals.
Hans Rosling, co-founder of Gapminder, calls it “the biggest change of our time”. It is Africa’s population growth from 1 billion people today to 2.5 billion by 2050 and 4 billion by 2100.
You could say that a close “second biggest change of our time” is the aging and stagnation of the population in rich countries. The combined population of North America, Europe, Japan and Australia/New Zealand is now at 1.3 billion and it will remain at 1.3 billion by 2050 and 2100 with small gains in North America and Oceania offset by declines in Europe and Japan. Read more