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[00:00.10]Life has found a way to survive in some of the most extreme

[00:06.18] conditions in existence.

[00:08.26]Now, scientists believe they might have found a new habitat 

[00:14.41]for microscopic organisms insid易经风水天机秘术e a mineral substance called garnet.

[00:20.61]Garnet is a gemstone

[00:23.11] that comes in many colors, but is most commonly a clear, deep red color.

[00:30.47]Recent research found strangely shaped markings inside garnet stones from Thailand.

[00:38.41]The researchers discovered that fatty acid had collected in the markings.

[00:45.49]This suggests that an extremely small organism, or microbe, 

[00:52.29]dug the markings into the garnet.

[00:54.29]Magnus Ivarsson is the lead researcher on the study.

[01:00.04]He is with the University of Southern Denmark.

[01:05.63]He told VOA that the research started with a Thai exchange

[01:09.8窝里秀3] student named Bongkot Phichaikamjorwut,

[01:13.31] who was studying the qualities of several pieces of garnet.

[01:19.35]The student noticed the strange markings, des傻瓜行记cribed as tunnels.

[01:22.94]These tunnels divided and changed directions.

[01:28.58]They were unlike the markings 

[01:30.72]caused by environmental damage that she had observed before.

[01:36.55]So the student asked Ivarsson for help.

[01:39.63]Ivarsson said, “When I first saw these structures, these tunnels, 

[01:45.74]I was sort of intrigued by the complexity虎扑,一部影院,国海证券-隐秘素材库,素材库专家 of them.”

[01:49.52]He added that he had studied other microbial markings in minerals before, 

[01:56.49]but never anything with such complexity.

[01:59.94]Garnet is an unexpected habitat for microbes because of how hard the stone is.

[02:08.22]In fact, Ivarsson suggests that garnet

[02:12.22] is the hardest mineral ever discovered to have markings created by microbes.

[02:18.52]“Who knows what we'll find next,” 

[02:21.36]he added, “maybe a diamond bored by microbes.

[02:25.35]Researchers, however, 

[02:29.79]note that no living orga虎扑,一部影院,国海证券-隐秘素材库,素材库专家nisms were discovered within the gemstones.

[02:36.19]Dawn Cardace is a geosciences 

[02:38.68]researcher at the University of Rhode Island in the United States.

[02:45.虎扑,一部影院,国海证券-隐秘素材库,素材库专家00]She says the study did not find any genetic material, or DNA, of the organisms.

[02:52.41]But she says that is probably because the researchers would need 

[02:58.71]to examine at least 1,000 garnet gemstones to collect any DNA.

[03:05.62]The researchers depended on several technologies to make their findings.

[03:12.27]They used high-powered microscopes to make

[03:15.66] three-dimensional maps of the tunnels, which are narrower than 王芊雯a human hair.

[03:22.31]The scie虎扑,一部影院,国海证券-隐秘素材库,素材库专家ntists cent明末巨盗ered their attention 

[03:24.53]on how the tunnels spread and changed directions,

[03:28.33] as well as the places where 椰香奶冻糕the tunnels came together.

[03:34.50]Environmental damage can cause breaks in hard materials.

[03:37.73]But Ivarsson says natural processes cannot explain the complexity

[03:44.69] of the tunnels his team observed.

[03:47.39]To demonstrate that microbes likely created the tunnels, 

[03:53.48]the researchers had to examine the inside of the boreholes.

[03:59.59]Ivarsson told VOA, “The organic content tells us that there's been life living in there.”

[04:06.48] In fact, the researchers identi衡阳保卫战电视剧全集fied organic substances common 王翰哲among bacteria and fungi.

[04:13.77]The garnets from the study came from th虎扑,一部影院,国海证券-隐秘素材库,素材库专家e soil in a river near Chiang Mai, Thailand.

[04:20.77]Ivarsson and his team compared the biological material found in them 

[04:27.35]to other minerals found in the same area, including quartz and hematite.

[04:33.96]None of the comparable stones showed signs of fatty acids.

[04:39.84]This suggests that the biological material was unique to the garnet tunnels.

[04:46.10]Ivarrson says that researchers at least know that biology was involved.

[04:52.37]Ivarsson and his team also examined Thai garnets 

[04:57.23]from river soil and from granite roc爱娜温兽k formations further down the river.

[05:03.38]He explains: “When we studied these garnets in the granite,

[05:09.50] we could see that there were no tunnels.

[05:12.21]But when we looked at the garnets further down the river,

[05:16.42] w嫩嫩老公爱不行e could see tha丁舞王道兰琴书大全t these tunnels structures had evolved.

[05:22.55]So, something happened along the way… in the river system." title="详细阅读:虎扑,一部影院,国海证券-秘密素材库,素材库专家">

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