Thank you Mark Carney for being elected. The CBC will stay with us.
And what made me more thankful? listened to Bob Mcdonald on the radio Science show on Saturday. I learned about the sharpest thing - obsidian. It is made when lava cools. It has been known to be the sharpest thing for how many years? The answer is thousands. Wikipedia says evidence of usage dates to 700,000 BC. That means indigenous peoples knew a few things. What they knew was that obsidian is the sharpest cutting edge of anything - only three nanometres thick.
Obsidian is volcanic glass used to make super-sharp tools. It is found as artifacts from chips to blades to arrowheads at hundreds of sites across the Rockies of Alberta and British Columbia, dating back thousands of years. However, there are no volcanos in the area so archaeologists are using this volcanic glass to chart Indigenous trade routes through North America. New research, led by Timothy Allan of Ember Archeology, has traced the obsidian's point of origin to a site nearly 1,000 kilometers away, suggesting the material travelled over long distances and passed through many hands. The research was published in the Journal of Field Archaeology.
These amazing people - travelling hundreds of kilometres to exchange or find this precious tool. And when we look at the picture, don't you think it is interesting, strange, and weird?
Couldn't this Maple trunk be called Obsidian? I guess not as it is gone now. When I first saw it in 2012, it was still growing, but by 2023 it was hollow, and then last year, it was gone.
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