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21st Century Tech Blog
Science, Technology and the Future
AI
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Politics and Technology
Environment
Climate Change Should Be A Kitchen Table Issue Say America’s Mayors
lenrosen4
-
May 16, 2025
Energy/Industry
Quantifying Damage From Fossil Fuel Operations Produces Ammunition for Climate Lawsuits
lenrosen4
-
May 4, 2025
Politics and Technology
Science vs. Populism And The Potential Fallout
lenrosen4
-
April 20, 2025
Editor Picks
New Smartphone Apps Use Barcode Scanners To Make Discriminating Choices
lenrosen4
-
March 29, 2025
Education
The Folks Down Under Produce A Climate Anxiety Toolkit
lenrosen4
-
March 14, 2025
Computers
Japanese City Uses the Blockchain for Online Voting
lenrosen4
-
September 6, 2018
0
Energy/Industry
California Creates Fossil-Fuel Driller Credits When Using CO2 to Enhance Oil Recovery
lenrosen4
-
September 4, 2018
0
Artificial Intelligence
Can AI Predict a City Population’s Obesity Rates?
lenrosen4
-
September 4, 2018
0
Artificial Intelligence
The Four Waves of AI as Described by Kai-Fu Lee
lenrosen4
-
September 3, 2018
1
Agriculture
Socioeconomic Factors are the Greatest Contributor to Future Carbon Emissions Says Study
lenrosen4
-
September 2, 2018
0
Climate Change Science
Carbon Pricing On the Way Back in Europe While Canada’s Conservative Parties Fight to Kill It
lenrosen4
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August 29, 2018
0
Cities
Why We Need to Look at Cities to Lead in the 21st Century
lenrosen4
-
August 28, 2018
0
Gadgets
Gizmos & Gadgets: Is Russia’s Military Seriously Considering Deploying Avatar-like Bipedal Walking Robots?
lenrosen4
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August 25, 2018
0
Artificial Intelligence
Will China Dominate the Technology World by 2030?
lenrosen4
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August 20, 2018
0
Energy/Industry
Holding the Moon: The High Ground of Space
lenrosen4
-
August 19, 2018
3
Climate Change Science
Will Climate Change Force Governments to End Free Market Economics?
lenrosen4
-
August 15, 2018
0
Climate Change Science
Why the Fall of the Roman Empire is Relevant to Today
lenrosen4
-
August 14, 2018
2
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Climate Change Should Be A Kitchen Table Issue Say America’s Mayors
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