Since 2005, World Bicycle Relief (WBR) has delivered more than 285,000 bicycles and trained more than 1,000 bicycle mechanics in Africa, Southeast Asia, and South America. The non-profit produces, distributes, and donates a $147 utilitarian bicycle, called the Buffalo, to impoverished students, health-care workers, farmers, and entrepreneurs. WBR also donates tens of thousands of bikes to students and aid workers, many of whom must cover vast distances to reach school or their patients.

In 2015, "we partnered with the inspiring [professional cycling] Team MTN Qhubeka p/b Samsung who helped fund more than 4,500 bicycles for African students through their 2015 race series and the #BicyclesChangeLives campaign," says WBR spokesperson Brooke Slezak.

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The organization also expanded its Bicycles for Educational Empowerment Program into Kenya, where 50 percent of children live more than three miles from school and one in 10 do not complete primary education.

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To read about more people who made the world healthier and happier in 2015, check out the entire inaugural Rodale 100 list.

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