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21st Century Tech Blog
Science, Technology and the Future
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Transportation
Automobiles
What Will Cars Be Like in 2050?
lenrosen4
-
May 2, 2025
Robots & Robotics
“Whoa Nelly” May Soon Be What You Say To Your Robot Horse
lenrosen4
-
April 30, 2025
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
Space
New Zealand’s Rocket Lab to Launch Its First 3D-Printed “It’s a Test” Rocket This Week
lenrosen4
-
May 22, 2017
0
Cities
On-Demand Transit May Be Perfect Solution for Smaller Cities and Towns
lenrosen4
-
May 17, 2017
2
Automobiles
On the Eve of the 80th Anniversary of the Hindenburg Fire We Look at the Current State of Hydrogen as an Alternative Fuel
lenrosen4
-
May 5, 2017
1
Electric Vehicles
Gizmos & Gadgets: Zinc-based Battery May be the Breakthrough to Make Electric Vehicles Ubiquitous
lenrosen4
-
April 30, 2017
0
Air Transport Technology
Air Turbulence and CO2 Level Increases in the Atmosphere
lenrosen4
-
April 7, 2017
0
Space
Flight Proven Rockets Revolutionizing Space Flight
lenrosen4
-
April 5, 2017
0
Agriculture
The Math to Keep Global Mean Temperatures from Rising More Than 2 Degrees Celsius
lenrosen4
-
April 3, 2017
0
Agriculture
The Challenge of the 21st Century – Reflections on 2,000 Postings to this Blog Site
lenrosen4
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March 28, 2017
0
Air Transport Technology
Latest Laptop Ban on Flights from Middle East and African Origins May Create Fire in the Hold Threat
lenrosen4
-
March 22, 2017
0
Air Transport Technology
CO2 from Aircraft Only One Part of the Industry’s Greenhouse Gas Problem
lenrosen4
-
March 18, 2017
0
Energy/Industry
Gizmos & Gadgets: Rotor Sails on Tankers and Cruise Ships will Harvest Wind, Save Fuel and Reduce Emissions
lenrosen4
-
March 16, 2017
0
Energy/Industry
An Infrequent Space Phenomenon May be Indications of Alien Civilizations
lenrosen4
-
March 10, 2017
0
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