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21st Century Tech Blog
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Building Net-Zero Urban Centres Not Easy as Evidenced by the Story of Masdar City
lenrosen4
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December 6, 2023
Cities
What Happens When Your City’s Water Supply is Compromised?
lenrosen4
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October 23, 2023
Cities
The Reality of Climate Change is Hitting Home With the Latest Headlines
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June 8, 2023
Cities
It Is Hard To Ignore Climate Change As A Wildfire Haze Blankets The Local Environment
lenrosen4
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June 7, 2023
Cities
Can Legacy Buildings Contribute to Climate Change Mitigation?
lenrosen4
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March 13, 2023
Cities
Human Resolutions for Lifeboat Earth in 2013
lenrosen4
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December 27, 2012
0
Cities
Urban Landscapes Update: A Developing World Solution to Urban Migration in the 21st Century
lenrosen4
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December 10, 2012
1
Cities
A Personal Climate Change Update: Climate Change Adaptation Project Advises My City to Prepare for the Worst
lenrosen4
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November 20, 2012
0
Automobiles
Gizmos and Gadgets – An Electric Car You Can Fold Up
lenrosen4
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November 15, 2012
1
Biomass
Materials Science Update: The Plastic Problem and a Plastic Solution
lenrosen4
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November 13, 2012
3
Artificial Intelligence
Climate Change Update: Rebuilding Staten Island, the Jersey Shore, Long Island and Lower Manhattan
lenrosen4
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November 7, 2012
2
Cities
Headlines at 21st Century Tech for November 2, 2012
lenrosen4
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November 2, 2012
3
Nations
Technology and Politics in the 21st Century – New Governance, New Micro Nations, New Experiments
lenrosen4
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October 22, 2012
1
Cities
Urban Landscapes Update: Megacities Impose Health Challenge for Developing World
lenrosen4
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October 16, 2012
1
Agriculture
Headlines at 21st Century Tech for October 12, 2012
lenrosen4
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October 13, 2012
0
Biomass
Energy Update: Sweden’s Waste-to-Energy Problem – Not Enough Garbage
lenrosen4
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September 30, 2012
1
Cities
Urban Landscapes Update: Creating a 21st Century House That Gives It Occupants a $0 Energy Bill
lenrosen4
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September 20, 2012
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1
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