Coffee is a principle crop in Leguruki, a rural village in the Arusha region of northern Tanzania, not far from the base of Mount Kilimanjaro. Of the coffee producers in the area, there are two kinds: ...
Two 11th grade students have invented a semi-automatic machine that can shell 75 durians per hour and costs VND9 million (US$350). Pham Anh Thu and Dang Hoang Dung of Dong Du Secondary and High School ...
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