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21st Century Tech Blog
Science, Technology and the Future
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Artificial Intelligence
What Happens to Navigation When GPS and a Map Are Unavailable
lenrosen4
-
April 10, 2025
Electric Vehicles
China’s BYD For The Top Includes New EV Batteries That Recharge In Five Minutes
lenrosen4
-
March 24, 2025
Electric Vehicles
The Two-Wheeled EV Market Focuses On Transportation Needs For The Global South
lenrosen4
-
March 9, 2025
Climate Change Science
Has Climate Change Made Commercial Flight More Problematic?
lenrosen4
-
February 25, 2025
Climate Change Science
The Earth’s Rate of Warming in the 21st Century is 0.2 Celsius per Decade
lenrosen4
-
December 19, 2024
Electric Vehicles
A Hiatus from Blogging – A Week in Aruba Where the Wind Always Blows and the Sun Never Quits
lenrosen4
-
May 7, 2018
0
Energy Conservation Technology
Fossil Fuel Industry Dilemmas – Part 2: When Will We Hit a Time When Pumping Oil Will No Longer Be Worthwhile?
lenrosen4
-
April 26, 2018
0
Energy Conservation Technology
Design Tips for a 21st Century Eco-Friendly Low Carbon Home
lenrosen4
-
April 18, 2018
0
Education
Glider Project to Fly at the Edge of Space and Serve as an Experimental Platform for Schools
lenrosen4
-
April 17, 2018
0
Medical Technology
An Aging Population Has Mobility Options My Parents Would Never Have Conceived: Take a Look
lenrosen4
-
April 6, 2018
0
Computers
Creating This Blog and Our Other Internet Activities Contribute to Carbon Emissions
lenrosen4
-
April 4, 2018
0
Military
Russian Sources State that China and Russia to Merge Their Global Positioning Systems
lenrosen4
-
April 2, 2018
0
Agriculture
How Canadians Can Lower Their Carbon Footprint and Show The World How It Can Be Done: Part 3: A Calculator
lenrosen4
-
March 21, 2018
1
Electric Vehicles
China Doubling Down on Greening its Economy
lenrosen4
-
March 10, 2018
0
Electric Vehicles
Gizmos & Gadgets: On Cold Days Does Your Smartphone Lose Its Charge? Soon That May End
lenrosen4
-
March 5, 2018
0
Space
Stratolaunch Aircraft Closer to its First Maiden Flight
lenrosen4
-
March 1, 2018
0
Air Transport Technology
Our Ozone Layer Problem Has Not Gone Away, It Has Shifted
lenrosen4
-
February 8, 2018
0
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