Obsidian geology: nature's black glass
It's one of the most interesting types of rock in geology.
Source: zmescience.com
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Detailed text transcripts for TV channel - FOXNEWS - 20130708:13:05:00
Right-hand seat. we know the weather wasn't particularly good and there was a glassy surface on the sea. i think it information is telling us the approach was quite complicated. gregg: thank you very much, michael. heather: moment after the plane crash landed the pilot radioed to the tower for help. it's difficult to unwhat he's saying but his voice is strangely calm given the chaos on board. >> emergency vehicles are responding. gregg: the ntsb saying 7 seconds out the crew asked to increase its air speed. it says the plane came in well
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