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arclein

The age of these trees and the great likelihood of human transportation makes it an excellent research tool. There are no growth rings to make it simple, but each unique node will have a unique age signature. That means the sampling will be costly, b

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arclein

If all four nucleotides formed naturally, they would zip together easily to form an RNA molecule with a backbone of alternating sugar and phosphate groups. The bases attached to the sugar constitute a four-letter alphabet in which biological informat

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It was in the right location and was certainly big enough and perhaps even small enough. Importantly, there were no other recent geological events that came close to matching it. And a quick check of geological reports indicated an extraordinary yout

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Vourlidas says he is not surprised that CMEs resemble French pastries. "I have suspected this all along. The croissant shape is a natural result of twisted magnetic fields on the sun and is predicted by a majority of theoretical models."

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I also want to observe that the clear reality of plate tectonics is not an answer either. This provides completely ironclad evidence of mass transfer from one side of a continental plate to the other side. Even allowing it to be forced by heat transf

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This work pretty well locks down the antiquity of maize husbandry. You have the natural heartland and direct evidence. It may and should be older still, but not by a lot. This age compares favorably with all other global domesticates

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If this is accepted, then cold fusion comes immediately in from the cold and every imaginable strategy will be applied. It is about time that ample good science got done in this field. What happened in 1989 is a blot on scientific integrity. Rec

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The press has almost forgotten our two rovers on their walk about on Mars. That they are still functioning is astonishing and they have made us at home on mars in a way that was never quite possible on the moon. That does suggest that we should sever

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Scientists are particularly concerned about the West Antarctic Ice Sheet, which has collapsed with great regularity about every 40,000 years and is currently in an unstable state. If all the ice atop West Antarctica today melted, it would raise world

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In all, 12 bacterial and six fungal colonies were detected, nine of which showed greater than 98 percent similarity with known species on Earth, the researchers said. Three bacterial colonies were deemed new species. Although the study doesn't c

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I sort of liked the accompanying bit of art work. I cannot imagine it having any semblance of an image of the real thing but what the heck. That such binaries should exist is a given. Their closeness must provide the most amazing effects on galactic

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