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本期節(jié)目音頻下載

Synchrotron Focuses on New Hominid Fossil

Last week, scientists announced the discovery of a remarkably well-preserved skeleton of what might be a new species of an ancient hominid that lived almost 2 million years ago. [See Kate Wong, Q]

上周科學(xué)家們宣布發(fā)現(xiàn)了一具保存得非常良好的骸骨,可能是屬于約200萬年前的一種新古代原始人類的。

The bones were found in 2008. This February, they were analyzed by one of the highest-tech tools available, the synchrotron at the European Synchrotron Radiation Facility in Grenoble, France. The device uses beams of x-rays a trillion times brighter than medical x-rays, and produces images at the atomic level.

骸骨發(fā)現(xiàn)于2008年。今年二月,科學(xué)家們用當(dāng)前最先進(jìn)的工具——位于法國格勒諾布爾歐洲同步輻射中心的同步加速器對其進(jìn)行分析。這種設(shè)備使用的x射線亮度是醫(yī)用射線的一萬億倍,可以形成原子級別的圖像。

Paleontologist Paul Tafforeau developed a technique to use the synchrotron to study fossils even still partially entombed—with resolution at the micron scale.

古生物學(xué)家保爾·塔福羅發(fā)明了一種方法,使同步加速器能以微米級別的分辨率研究部分還埋在土里的化石。

Fossils of the age and significance of the new find are rarely moved. But discoverer Lee Berger oversaw the careful transport of the skull and skeleton fragments from South Africa to France for a two-week intensive study.

通常人們很少會(huì)移動(dòng)這種時(shí)代的化石、具有重大意義的新發(fā)現(xiàn),然而發(fā)現(xiàn)化石的人李·伯格負(fù)責(zé)監(jiān)督將化石的頭骨和骨骼部分從南非運(yùn)往法國,以對其進(jìn)行為期兩周的集中研究。

The preliminary analysis has turned up fossilized insect eggs, left by ancient bugs that may have fed on the decomposing corpse. There’s also a region of low-density that could be a section of the hominid’s brain. The researchers hope that the synchrotron ultimately supplies what used to be impossible-to-get details about our distant relative.

先前的分析發(fā)現(xiàn)了已成為化石的蟲卵,可能是由以腐尸為食的古代昆蟲留下的。還有一個(gè)密度低的區(qū)域可能是原始人類大腦的一部分。研究者希望同步加速器最終能提供以前不可能找到的我們遠(yuǎn)親的細(xì)節(jié)。

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