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Search
21st Century Tech Blog
Science, Technology and the Future
AI
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Energy/Industry
Environment
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Transportation
Transportation
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
Space
Boeing Has Crew Capsule to Replace Soyuz and with Bigelow a Private Space Station to Replace the ISS
lenrosen4
-
May 18, 2014
0
Space
Fallout from Russia’s Adventure in Crimea – A New Space Race?
lenrosen4
-
May 16, 2014
0
Energy/Industry
Patented Hydrogen Engine Ready to Power the Future
lenrosen4
-
May 10, 2014
3
Agriculture
New U.S. Report States “Climate Change Has Moved Firmly into the Present”
lenrosen4
-
May 6, 2014
0
Energy/Industry
Shields Up – Star Trek Technology Potentially Feasible
lenrosen4
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May 5, 2014
0
Cities
Gizmos & Gadgets: The “Age of Sail” Returns to San Francisco Bay
lenrosen4
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May 3, 2014
0
Energy/Industry
Greenpeace is a Gadfly in Russian Arctic Oil Extraction – Maybe We Should Be Paying Attention
lenrosen4
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May 2, 2014
1
Energy Conservation Technology
Some Companies Get Climate Change – Look At Mars
lenrosen4
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May 1, 2014
2
Space
Headlines: SpaceX Delivers Dragon to ISS and Completes Controlled Descent of Rocket Booster
lenrosen4
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April 23, 2014
0
Energy from Waste
Headlines: Pee in Space is Not Only Useful for Drinking Water but also for Fuel
lenrosen4
-
April 17, 2014
0
Space
Headlines: NASA Seeks Better Oxygen Recovery Systems for Spaceflights
lenrosen4
-
April 16, 2014
0
Space
Russia: First Crimea, Then the Moon
lenrosen4
-
April 14, 2014
3
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