Follows a caterpillar as it changes into a butterfly, from its pupa stage throught its transformation into a chrysalis to its metamorphosis into a butterfly newly emerged from a sticky cocoon.

Santiago Ramon y Cajal was a mythic figure in science. Hailed as the father of modern anatomy and neurobiology, he was largely responsible for the modern conception of the brain. His groundbreaking works were New Ideas on the Structure of the Nervous System and Histology of the Nervous System in Man and Vertebrates. In addition to leaving a legacy of unparalleled scientific res...(展开全部)

Santiago Ramon y Cajal was a mythic figure in science. Hailed as the father of modern anatomy and neurobiology, he was largely responsible for the modern conception of the brain. His groundbreaking works were New Ideas on the Structure of the Nervous System and Histology of the Nervous System in Man and Vertebrates. In addition to leaving a legacy of unparalleled scientific res...(展开全部)

Santiago Ramon y Cajal was a mythic figure in science. Hailed as the father of modern anatomy and neurobiology, he was largely responsible for the modern conception of the brain. His groundbreaking works were New Ideas on the Structure of the Nervous System and Histology of the Nervous System in Man and Vertebrates. In addition to leaving a legacy of unparalleled scientific res...(展开全部)

Santiago Ramon y Cajal was a mythic figure in science. Hailed as the father of modern anatomy and neurobiology, he was largely responsible for the modern conception of the brain. His groundbreaking works were New Ideas on the Structure of the Nervous System and Histology of the Nervous System in Man and Vertebrates. In addition to leaving a legacy of unparalleled scientific res...(展开全部)

饥饿的毛毛虫，从周一到周日，从一个苹果两个梨……到十种杂食到一大片叶子，最后蜕变成美丽花蝴蝶。 On Monday he ate through one apple. But he was still hungry. On Tuesday he ate through two pears, but he was still hungry. On Wednesday he ate though three plums, but he was still hungry. On Thursday he ate through four strawberries, but he was still hungry.......' On Saturday, he eats so much he has a stomachache....but puts it r...(展开全部)

Karl Pillemer is a professor of human development at Cornell University and Professor of Gerontology in Medicine at the Weill Cornell Medical College. An internationally renowned gerontologist, his research examines how people develop and change throughout their lives. He has authored five books and over 100 scientific publications, and speaks throughout the world on aging-rela...(展开全部)

A philosophy that saw self-possession as the key to an existence lived 'in accordance with nature', Stoicism called for the restraint of animal instincts and the severing of emotional ties. These beliefs were formulated by the Athenian followers of Zeno in the fourth century BC, but it was in Seneca (c. 4 BC - AD 65) that the Stoics found their most eloquent advocate. Stoicism,...(展开全部)

Internationally known theoretical physicist and bestselling author Lawrence Krauss offers provocative, revelatory answers to the most basic philosophical questions: Where did our universe come from? Why is there something rather than nothing? And how is it all going to end? Why is there something rather than nothing?" is asked of anyone who says there is no God. Yet this is not...(展开全部)