호박의 비밀
과학동아 1993년 08호
or watching ads for movies. Newly alive, rampaging dinosaurs may be fictional — so far — but amber is real, and chock full of secrets now being revealed to scientists.Amber is hardened resin that begins as a soft, sticky organic polymer that is exuded mainly from the bark of coniferous trees like pines and firs. Other plants and some scale insects also produce resin, but not the amounts ...