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21st Century Tech Blog
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Urban Management In The 21st Century Requires “Smart City” Solutions
lenrosen4
-
April 9, 2025
Cities
Smart Lighting For Sustainable 21st Century Cities
lenrosen4
-
March 30, 2025
Cities
Why Petrochemical Dependency Is Making Our Houses Burn Down
lenrosen4
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February 5, 2025
Cities
LA Burning Is Hard To Ignore If You Cover Climate Change
lenrosen4
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January 14, 2025
Cities
The Present And Future Internet of Things For Sustainable Construction
lenrosen4
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September 5, 2024
Cities
China to Build Kilometer High Sustainable Tower
lenrosen4
-
July 4, 2014
0
Agriculture
Freshwater Scarcity May Be Our First Climate Change Adaptability Challenge
lenrosen4
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July 2, 2014
2
Cities
Putting Perspective on Climate Change Impacts: Part 1 – The Eastern U.S.
lenrosen4
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June 11, 2014
0
Agriculture
I Was Asked to Contribute an Abstract to an Upcoming Conference On Vertical Farming and its Future
lenrosen4
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May 29, 2014
0
Cities
Proterra’s Electric Bus Travels Over 1,100 Kilometers in 24 Hours
lenrosen4
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May 25, 2014
1
Cities
New West Antarctica Report Points to Rising Sea Levels from Melting Glaciers
lenrosen4
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May 13, 2014
0
Cities
Gizmos & Gadgets: The “Age of Sail” Returns to San Francisco Bay
lenrosen4
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May 3, 2014
0
Cities
Would Zoning the Ocean Save it?
lenrosen4
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April 26, 2014
0
Cities
Headlines: Two Approaches to Printing Houses in the Age of 3D
lenrosen4
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April 25, 2014
0
Cities
One of Canada’s Biggest Banks Looks at the Economics of Weather Events
lenrosen4
-
April 18, 2014
1
Agriculture
IPCC Lays Out its Climate Change Mitigation Strategy
lenrosen4
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April 13, 2014
3
Cities
Architects and Engineers Address Global Warming
lenrosen4
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April 6, 2014
0
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