3. Population pyramids in this slideshow, unless noted otherwise, from: US Census Bureau.
International Programs. Retrieved August 22, 2017:
https://www.census.gov/population/international/data/idb/informationGateway.php
12. Economist. Raving ravens. 8/19/07:
http://www.economist.com/world/europe/displaystory.cfm?story_id=9122814
Noack, Rick. 2014. Why South Korea predicts its end will come in 2750. Washington
Post. August 30:
http://www.washingtonpost.com/blogs/worldviews/wp/2014/08/30/why-south-korea-
predicts-its-end-will-come-in-2750/
13. From University of Miami
Biology. Retrieved 3/6/06:
http://fig.cox.miami.edu/~cmalle
ry/150/handouts/fertility.jpg
Demographic
transition
14. Ellen Byron. From Diapers to
'Depends': Marketers Discreetly Retool
for Aging Boomers. Wall Street
Journal. February 5, 2011:
http://online.wsj.com/article/SB1000142
4052748704013604576104394209062
996.html