It was just before 9 a.m. in Louisville, Ky. People milling about at a trade show gathered around one man with a microphone. He stood in front of a tall green curtain -- obscuring a few square feet of ...

Ranked third in the world, Tanzania is Africa's largest exporter of sesame seeds. The traditional way of planting these seeds is slow and arduous work, but one man is changing that. Entrepreneur ...