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本期節(jié)目音頻下載

Carl Zimmer, science writer, on the power of evolution

EarthSky

Carl Zimmer: Just about every week, there will be some study I hear about having to do with some aspect of evolution that just blows me away.

卡爾齊默：生物進(jìn)化的研究領(lǐng)域每周都會(huì)出現(xiàn)新的成果，它們總是那么振奮人心。

You’re lisening to Science writer Carl Zimmer, author of the 2009 book, The Tangled Bank: An Introduction to Evolution. Zimmer said that the theory of evolution fascinates him, because it explains how all forms of life emerge and develop, from 3.5 billion years ago to today.

今天節(jié)目組采訪的是《科學(xué)》雜志記者卡爾齊默，去年他撰寫出版了《樹木交錯(cuò)的河岸：進(jìn)化導(dǎo)論》。齊默說進(jìn)化論令他心醉神迷，因?yàn)樗忉屃藦?5億年前至今所有生命形式的產(chǎn)生和演變。

Carl Zimmer: Whether it’s the evolution of new kinds of influenza viruses, or the evolution of our own species.

齊默：無論是新型流感病毒的發(fā)展演變，還是人類本身的進(jìn)化歷程，這些都深深吸引著我。

Zimmer said scientists are still figuring out the mysterious ways that evolution works. As an example, he described an unusual cancer that is spreading among endangered marsupials called Tasmanian devils. This cancer starts out as a tumor on their faces.

齊默說，為了揭開生物進(jìn)化機(jī)制的未解之謎，科學(xué)家仍進(jìn)行著不懈努力。他舉了個(gè)例子，目前有一種罕見的癌癥正在威脅瀕危物種袋獾。癌癥初期，袋獾的面部生出腫瘤。

Carl Zimmer: Tasmanian devils don’t like each other much, so they will bite each others’ faces and actually bite off the tumors some time, and those cancer cells get into their own face and develop into new tumors.

卡爾齊默：袋獾不喜歡自己的同類，它們彼此啃咬對(duì)方的臉，有時(shí)會(huì)把對(duì)方的腫瘤咬下來，癌細(xì)胞便擴(kuò)散到自己體內(nèi)生出新腫瘤。

Zimmer marveled that scientists were able to trace this infectious cancer – which they originally thought was a virus – to a single nerve cell in one Tasmanian devil that had turned cancerous.

于科學(xué)家如何能夠?qū)⑦@種傳染性癌癥的源頭追蹤到袋獾體內(nèi)某個(gè)神經(jīng)細(xì)胞的癌變，齊默感到非常驚異，他們?cè)疽詾檫@種傳染病是由病毒引起的。

Carl Zimmer: Through understanding evolution, you get to understand more about life itself.

卡爾齊默：通過了解進(jìn)化論，你將對(duì)生命本身有更為深刻的理解。

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