Nine-year-old boy plants seed that yields three trillion trees

Talk about mighty oaks growing from little acorns! A 9-year-old's homework assignment has led to the world's most comprehensive tree-counting project, which in turn stands to increase the value of upcoming missions from NASA ...

Second African nation gets Google street view

Botswana on Monday became the second African country to be featured on Google Maps' Street View, allowing users to explore landmarks such as the Okavango Delta.

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