Dlaczego Amerykanie i Kanadyjczycy obchodzą Święto Pracy -Kenneth C. Davis Published 2013-08-30 Download video MP4 360p Download video MP4 720p Recommendations 12:25 Why Do We Work 40 Hours A Week? 10:23 The fall (and rise?) of unions in the US 04:33 The History of Labor Day | Drive Thru History: American Holidays | Labor Day 04:34 How we conquered the deadly smallpox virus - Simona Zompi 04:36 Harvard negotiator explains how to argue | Dan Shapiro 13:02 The Haymarket Square Riot & The Fight For Workers Rights 05:46 Why the US celebrates Columbus Day 06:23 How can we solve the antibiotic resistance crisis? - Gerry Wright 05:39 The Atlantic slave trade: What too few textbooks told you - Anthony Hazard 05:09 A 5,300-year-old murder mystery - Albert Zink 02:11 How Labor Day Has Become Such An Important Holiday 14:59 The Next Global Superpower Isn't Who You Think | Ian Bremmer | TED 03:14 History of the Holidays: Labor Day | History 04:54 Why is cotton in everything? - Michael R. Stiff 06:24 Insults by Shakespeare 10:22 Why No One Wants To Live In Canada Anymore 04:08 Urbanization and the future of cities - Vance Kite 05:02 Population pyramids: Powerful predictors of the future - Kim Preshoff 01:07 Workers Of The World Unite And Fight – May Day Explained 15:21 Geography Now! Germany