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21st Century Tech Blog
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Transportation
Ships
Ships
Environment
Will Viruses Aboard Lead to the Death of Cruise Lines? The Jury is Out
lenrosen4
-
June 7, 2020
Energy/Industry
Gizmos & Gadgets Update: Rotor Sails Proving Their Worth After a Year of Testing
lenrosen4
-
October 29, 2019
Climate Change Science
Trump Wants to Be Another Seward But Instead of Buying Alaska from Russia He Wants to Purchase Greenland from Denmark
lenrosen4
-
August 16, 2019
Energy/Industry
Hybrid Propulsion Systems for Ships May Be One Answer to Reducing Greenhouse Gas Emissions Globally
lenrosen4
-
August 8, 2019
Energy/Industry
Are We Making Progress in Reducing Carbon Pollution in the Marine Transportation Sector?
lenrosen4
-
February 25, 2019
Energy/Industry
International Maritime Organization Under the Gun to Reduce Ship Emissions
lenrosen4
-
December 5, 2015
0
Environment
Gizmos & Gadgets: Ecoship to be Unveiled at COP 21 on December 5th
lenrosen4
-
December 3, 2015
0
Climate Change Science
Experiencing Climate Change First Hand on the Danube River
lenrosen4
-
September 7, 2015
0
Oceans
New Mayflower Green Drone Ship to Cross the Atlantic in 2020
lenrosen4
-
August 6, 2015
0
Ships
A Merchant Vessel Hybrid Concept Called Vindskip
lenrosen4
-
January 17, 2015
0
Environment
A New Canal Across Nicaragua – A Good or Bad Thing
lenrosen4
-
January 13, 2015
0
Environment
Here’s a Contradiction in Terms – Ecotankers
lenrosen4
-
November 7, 2014
0
Environment
Could We Have Salvaged the Costa Concordia in the 20th Century?
lenrosen4
-
July 13, 2014
0
Cities
Gizmos & Gadgets: The “Age of Sail” Returns to San Francisco Bay
lenrosen4
-
May 3, 2014
0
Energy/Industry
Greenpeace is a Gadfly in Russian Arctic Oil Extraction – Maybe We Should Be Paying Attention
lenrosen4
-
May 2, 2014
1
Military
Headlines: U.S. Navy to Test Laser Weapon System This Summer
lenrosen4
-
April 10, 2014
0
Energy/Industry
Headlines: New Material May Lead to Faster Oil Spill Cleanups
lenrosen4
-
March 8, 2014
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