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...Research Institute (KEFRI), which certifies seeds. This photo gallery shows Kinyanjui’s ingenuity in using the seed balls instead of the usual plastic bags. When tree seedlings are grown in plastic bags in a nursery, he explains, the roots get squeezed and this limits their ability to grow fast. The seed ball method enables roots to adapt easily, with less disturbance.....

...It is possible that gastroliths had a dual function, or even different functions in different creatures. Even palaeontologists disagree on the matter; some prefer the idea that they were used for ballast, others that they were used in digestion. Future research may reveal new clues to help us solve this mystery, but for now it remains the ‘riddle of the gastroliths’....