SSS 2012-01-16(在线收听

 Magnifying glass, calipers, teeny tiny tape measure, these are the weapons with which researchers are fighting it out to find the world's smallest frog. One team just announced the discovery of the unaverage 7.7 millimeter p* which can sit comfortably on a dime. It was discovered in the moist underlayer of New Guinea's tropical rain forest. The research was published in the Journal Public Library of Science One. 

The little guide does oust another New Guinea frog which had only claimed the title in December. The newest frog species is also being said as the world's smallest vertebrate. Although it's the more correctly the smallest free living vertebrate, as 6.2 millimeter meal anglerfish spends its life buried in the body of its mate. Finding the little frog was no smaller achievement. Besides being tiny, the high pitch mating calls researchers followed, sound more insect to amphibian. Tiny vertebrates reveal changes that make many * possible.For instance, some of the digits on the frogs' feet have disappeared, and their skulls developed differently than those of larger critters. So we celebrate the world's smallest frog and free living vertebrate, until the next one is discovered.
  原文地址:http://www.tingroom.com/lesson/sasss/2012/1/170269.html