Feeling the pressure: The World Cup's altitude factor www.newscientist.com/data/images/ns/cms/mg20627635.800/mg20627635.800-1_300_thumbnail_70_100.jpg Altitude doesn't just affect footballers' physical performance – teams in South Africa had better brush up their aerodynamic physics 08:00 04 June 2010 http://www.newscientist.com/article/mg20627635.800-feeling-the-pressure-the-world-cups-altitude-factor.html