Visit the following websites for background information on the Cola Wars: 
 
Coca-Cola’s union troubles in Columbia covered by Frontline: 
http://www.pbs.org/frontlineworld/fellows/colombia0106/  
 
PepsiCo annual reports:
http://www.pepsico.com/Investors/Annual-Reports.html  
 
Coca-Cola annual reports: 
http://www.thecoca-colacompany.com/investors/annual_other_reports.html 
 
The Cola Wars (NB bias caution on this article):
http://en.wikipedia.org/wiki/Cola_wars  
 
PepsiCo tackles obesity:
John Seabrook, “Snacks for a Fat Planet: PepsiCo takes stock of the obesity epidemic.”
The New Yorker, May 16, 2011.
http://www.newyorker.com/reporting/2011/05/16/110516fa_fact_seabrook 
 
“Taking the challenge: Pepsi gets a makeover.” The Economist, March 27, 2010.
http://www.economist.com/node/15772138 
 
problems you might consider:

problem 1: Despite less valuable brands, PepsiCo has done very well. What strategies of Pepsi and of Coke contributed to this situation?

problem 2: What role does Wal-Mart play in the Cola wars? What features of Wal-Mart make it unlike either Coca-Cola or Pepsi?