How do the astronomers and scientists distinguish between different galaxies?
Wrap an apple in Yasa-sheet and it will stay fresh for weeks. So says Semei Shiratori of Keio University in Yokahama, Japan, who makes this high-tech plastic for preserving fruits and vegetables. To be sure, its a humble product. But it may be a harbinger of an enormous new class of materials and products created in a startlingly simple process: Thin liquid layers applied one at a time create solid, multilayered coatings that mix and match a wide variety of technologically valuable properties. As for Yasa-sheet, its made of alternating layers of chitosan, which is a major sugar-based ingredient of crab shells, and an enzyme-containing liquid extracted from bamboo. The protective wrapper works, according to Shiratori, by suppressing the foods emission of ethylene gasa naturally produced ripening agent that eventually makes fruits and vegetables rot. Hair-raising lotion A Singapore researcher has developed a lotion he claimed will restore at least some of the crowning glory to shiny pate
