Parents hold up their kids after changing cloth diapers during the 2013 Great Cloth Diaper Change event in Toronto, Canada, April 20, 2013. This annual global event took place on Saturday in 17 countries and regions to increase awareness about reusable cloth diapers and to celebrate the Earth Day. Before this year's event, the Guinness World Record has 8,251 cloth diapers changed simultaneously. (Xinhua/Zou Zheng)

Parents hold up their cloth diapers during the 2013 Great Cloth Diaper Change event in Toronto, Canada, April 20, 2013. This annual global event took place on Saturday in 17 countries and regions to increase awareness about reusable cloth diapers and to celebrate the Earth Day. Before this year's event, the Guinness World Record has 8,251 cloth diapers changed simultaneously. (Xinhua/Zou Zheng)

Kids play with their parents as a warm up during the 2013 Great Cloth Diaper Change event in Toronto, Canada, April 20, 2013. This annual global event took place on Saturday in 17 countries and regions to increase awareness about reusable cloth diapers and to celebrate the Earth Day. Before this year's event, the Guinness World Record has 8,251 cloth diapers changed simultaneously. (Xinhua/Zou Zheng)

Parents and their kids line up during the 2013 Great Cloth Diaper Change event in Toronto, Canada, April 20, 2013. This annual global event took place on Saturday in 17 countries and regions to increase awareness about reusable cloth diapers and to celebrate the Earth Day. Before this year's event, the Guinness World Record has 8,251 cloth diapers changed simultaneously. (Xinhua/Zou Zheng)

Parents hold up their kids after changing cloth diapers during the 2013 Great Cloth Diaper Change event in Toronto, Canada, April 20, 2013. This annual global event took place on Saturday in 17 countries and regions to increase awareness about reusable cloth diapers and to celebrate the Earth Day. Before this year's event, the Guinness World Record has 8,251 cloth diapers changed simultaneously. (Xinhua/Zou Zheng)