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21st Century Tech Blog
Science, Technology and the Future
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Hydroelectricity
Energy/Industry
Nikola Tesla’s Energy Theory Using The Power Of Flowing Water And Its Unfulfilled Promise
lenrosen4
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January 13, 2024
Agriculture
Water Wars are in Humanity’s Future if Not in the Present
lenrosen4
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June 5, 2020
Biomass
Is Wind and Solar Enough to Meet the Energy Needs of Our 21st Century World?
lenrosen4
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March 20, 2019
Agriculture
Global Warming and the Colorado River
lenrosen4
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February 5, 2019
Energy/Industry
All Forms of Renewable Energy to be Cheaper Than Power Generated from Fossil Fuel Sources by 2020
lenrosen4
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January 17, 2018
Energy/Industry
Added Renewable Electricity Generation Surpassed Fossil Fuel Plants in 2015
lenrosen4
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October 26, 2016
0
Agriculture
Dams Have an Unintended Consequence: Methane Emissions
lenrosen4
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October 1, 2016
0
Energy/Industry
Australia Combines Solar and Pumped Storage at Abandoned Gold Mine Site
lenrosen4
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September 14, 2016
0
Biomass
What Will it Take for the United States to do What Costa Rica Has Accomplished in 2015?
lenrosen4
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December 27, 2015
0
Energy/Industry
The Coal Era to End in New Zealand – Listen up America
lenrosen4
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August 9, 2015
0
Artificial Intelligence
What Exactly is the Clean Power Plan That President Obama Announced?
lenrosen4
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August 4, 2015
0
Climate Change Science
Canadian Sub-Jurisdiction Leaders Agree to Do as Little as Possible About Carbon Reduction
lenrosen4
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July 18, 2015
0
Biomass
Canadian Investment in Renewables Surpasses That of the Oil Sands
lenrosen4
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December 3, 2014
0
Energy/Industry
Energy and Island States – Necessity Driving Innovation
lenrosen4
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November 11, 2014
0
Energy/Industry
China is Burning Less Coal in 2014 – a Good Sign?
lenrosen4
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October 26, 2014
0
Agriculture
Headlines: IBM’s “Project Lucy” Focuses Watson on Africa’s Challenges
lenrosen4
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February 12, 2014
3
Cities
Would a Smart Grid Have Helped in Toronto’s Ice Storm?
lenrosen4
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December 26, 2013
0
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Science Without The Humanities In College Is Poor Education
April 14, 2025
