[jyl]

I stumbled across this. Apparently humans are "jack of all trades, master of none" - mediocre swimmers, climbers, fighters - but we are better than any other animal in one thing: in running for long distances in hot conditions. Our ability to sweat copiously, lack of insulating fur, and legs built for endurance allowed us to run prey to exhaustion. No other predator can do that. Cheetahs can only dash for 30 seconds, dogs and wolves overheat, but man can keep going for hours and days. Even horse cavalry cannot keep up with men on many-day marches.

Cool, eh?

https://mobile.credit-suisse.com/index.cfm?fuseaction=mOpenArticle&aoid=286686&coid=286562&lang=EN

http://m.phys.org/_news95954919.html

http://www.nytimes.com/2009/10/27/health/27well.html