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Brazilian inventor sows seeds for farmers' success (1:36) 

Jan. 12 - A Brazilian agronomist and entrepreneur has developed a seed-planting system that promises to significantly boost the productivity of small farms. With a grant from the Bill and Melinda Gates Foundation, Mateus Marrafon is testing his design in the hopes of eventually commercializing it for use in developing nations around the world. Tara Cleary has more.

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