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21st Century Tech Blog
Science, Technology and the Future
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Renewable
Energy/Industry
Perovskite Photovoltaics Leaving Silicon In The Dust
lenrosen4
-
May 30, 2025
Energy/Industry
Perovskite Solar: The Technology That’s Changing How We Power Small Devices
lenrosen4
-
May 28, 2025
Renewable
Solar Energy Technology Is Going “Perovskite”
lenrosen4
-
January 18, 2025
Solar Energy
A New Look At The Viability Of Solar Roads
lenrosen4
-
November 4, 2024
Energy/Industry
Solar Energy is Popping Up in Some Very Unusual Places
lenrosen4
-
April 17, 2024
Energy/Industry
Shale Gas a Poor Solution for Cutting CO2 and Greenhouse Gas Emissions
lenrosen4
-
September 27, 2014
2
Energy/Industry
Gizmos & Gadgets: An Open Source 3D Printed Wind Turbine for Personal Use
lenrosen4
-
September 11, 2014
0
Energy/Industry
Paris Mining Geothermal Energy
lenrosen4
-
September 4, 2014
0
Biomass
News About a Methane Bomb on the 69th Anniversary of the Hiroshima Bomb
lenrosen4
-
August 6, 2014
0
Energy/Industry
Solar Stories Tell Different Tales
lenrosen4
-
August 1, 2014
2
Agriculture
A Global Calculator To Help Countries Understand How To Strategize for Climate Change
lenrosen4
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July 29, 2014
0
Energy/Industry
Why do Wind Turbines Have Three Blades? Maybe They Shouldn’t
lenrosen4
-
July 1, 2014
2
Energy/Industry
Encouraging News Headlines on the Renewable Energy Front
lenrosen4
-
June 29, 2014
0
Energy/Industry
Limiting CO2 to 450 Parts Per Million and its Impact on Fossil Fuel Companies
lenrosen4
-
June 16, 2014
2
Energy/Industry
If Companies Lead on Climate Change Will Governments Follow? Look at IKEA.
lenrosen4
-
June 16, 2014
0
Electric Vehicles
The Infinium Phenomenon – A Start Up That Manufactures Rare Earth Metals
lenrosen4
-
June 12, 2014
0
Energy/Industry
Solar Roadways – Are You Kidding Me?
lenrosen4
-
May 27, 2014
0
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