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21st Century Tech Blog
Science, Technology and the Future
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Solar Energy
Energy/Industry
Perovskite Photovoltaics Leaving Silicon In The Dust
lenrosen4
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May 30, 2025
Energy/Industry
Perovskite Solar: The Technology That’s Changing How We Power Small Devices
lenrosen4
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May 28, 2025
Renewable
Solar Energy Technology Is Going “Perovskite”
lenrosen4
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January 18, 2025
Solar Energy
A New Look At The Viability Of Solar Roads
lenrosen4
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November 4, 2024
Energy/Industry
Solar Energy is Popping Up in Some Very Unusual Places
lenrosen4
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April 17, 2024
Energy/Industry
China is Burning Less Coal in 2014 – a Good Sign?
lenrosen4
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October 26, 2014
0
Energy/Industry
Ohio State University Invents All-in-One Solar Cell and Battery
lenrosen4
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October 20, 2014
0
Energy/Industry
Why Aren’t Tropical Island Nations Embracing Renewable Energy?
lenrosen4
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October 18, 2014
0
Energy/Industry
Revised IEA Roadmap Sees Solar Energy Producing 27% of the World’s Power with a Proviso
lenrosen4
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October 7, 2014
0
Cities
New York State Takes Activist Role in Implementing Solar Energy Projects
lenrosen4
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September 30, 2014
1
Energy/Industry
Solar Stories Tell Different Tales
lenrosen4
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August 1, 2014
2
Energy/Industry
Encouraging News Headlines on the Renewable Energy Front
lenrosen4
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June 29, 2014
0
Energy/Industry
Limiting CO2 to 450 Parts Per Million and its Impact on Fossil Fuel Companies
lenrosen4
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June 16, 2014
2
Energy/Industry
If Companies Lead on Climate Change Will Governments Follow? Look at IKEA.
lenrosen4
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June 16, 2014
0
Energy/Industry
Solar Roadways – Are You Kidding Me?
lenrosen4
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May 27, 2014
0
Artificial Intelligence
MIT Lists its 10 Breakthrough Technologies for 2014 – Part 2
lenrosen4
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May 15, 2014
0
Energy/Industry
Headlines: Arizona Approves First Solar Wind Tower
lenrosen4
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April 29, 2014
0
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