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21st Century Tech Blog
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Since 2009 The Pacific Nation of Solomon Islands Is Shrinking
lenrosen4
-
March 28, 2025
Climate Change Science
A Practical Understanding Of Climate Change: Part 2
lenrosen4
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March 8, 2025
Climate Change Science
A Practical Understanding Of Climate Change: Part 1
lenrosen4
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March 8, 2025
Climate Change Science
Has Climate Change Made Commercial Flight More Problematic?
lenrosen4
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February 25, 2025
Climate Change Science
The Noah Flood Narrative In The Bible May Have Historical Roots
lenrosen4
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February 2, 2025
Climate Change Science
Environment Update: Carbon Taxes Work – Just Ask British Columbia
lenrosen4
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July 25, 2013
0
Cities
Floods in Toronto, Floods in Calgary, Train Derailment in Quebec – How are they Related?
lenrosen4
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July 10, 2013
0
Cities
As a Retiree Living Off Investment Income What Should Be My Take On Energy Stocks? – Part 2
lenrosen4
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July 9, 2013
1
Climate Change Science
As a Retiree Living Off Investment Income What Should Be My Take on Energy Stocks?
lenrosen4
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July 3, 2013
3
Climate Change Science
Climate Change – A President Gets Serious About Carbon
lenrosen4
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June 26, 2013
0
Climate Change Science
Materials Science Update: Plastic Wood Replacing Timber in Construction – Not Necessarily a Good Thing
lenrosen4
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June 11, 2013
2
Climate Change Science
Energy and Environment Update: Crowdsourcing to Hunt for Power Plants
lenrosen4
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May 14, 2013
1
Climate Change Science
Climate Change Update: We Did It! We Passed 400
lenrosen4
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May 11, 2013
0
Agriculture
Headlines at 21st Century Tech for May 10, 2013
lenrosen4
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May 10, 2013
2
Climate Change Science
Energy Update: No Limit it Seems to U.S. Oil Reserves Says Geological Survey
lenrosen4
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May 8, 2013
2
Climate Change Science
Climate Change Update: Follow the Keeling Curve on Twitter
lenrosen4
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May 2, 2013
1
Cities
Society and Politics – Part 4: Getting Change Done
lenrosen4
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May 1, 2013
1
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