The history of the great tsunamis that came hundreds of years ago is recorded in the sands and other sediments deposited on land by water. Analysis of the sand brought that way and DNA fragments of marine animals it contains can tell scientists whether the place is also threatened by tsunamis today and how often a tsunami can occur.
For fruit and vegetables, peel is a natural protector against pests and toxins. But sometimes it is unreliable, allowing substances like pesticides to penetrate into pulp. Polish researcher will check peels of 20 species to determine which of them stop harmful substances and which let them in.
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