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21st Century Tech Blog
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Mining
Ocean Floor Polymetallic Nodules Threatened By Deep Sea Miners Serve An Existential Purpose
lenrosen4
-
July 23, 2024
Climate Change Science
Sustainable Coal is a Fiction Being Peddled by Coal Producers and Their Customers
lenrosen4
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November 25, 2023
Mining
On The Ocean Front Part 2: Our Pursuit Of A Low-Carbon Future May Have Destructive Consequences
lenrosen4
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July 31, 2023
Mining
The Reality Of Deep Sea Mining Is Getting Closer As Are The Consequences
lenrosen4
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March 16, 2023
Mining
The Dream of Space Mining Remains Illusory at Present
lenrosen4
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February 20, 2023
Climate Change Science
Headlines: New Oil Sands Recovery Technology Called a “Game Changer”
lenrosen4
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January 16, 2014
0
Energy/Industry
Headlines: Witness a Fool’s Errand – Canada’s Claim to the North Pole Seabed
lenrosen4
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December 13, 2013
0
Mining
Space Update: Planetary Resources Invites You to Hang Out with the Asteroid Miners
lenrosen4
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April 23, 2013
1
Biomedical Engineering
Headlines at 21st Century Tech for March 22, 2013
lenrosen4
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March 22, 2013
0
Cities
In 2025 630 Million of Us Will Live in 37 Megacities
lenrosen4
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March 6, 2013
0
Energy/Industry
Energy Update: Pumped Storage to Compliment Variable Renewable Energy
lenrosen4
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February 20, 2013
5
Air Transport Technology
Transportation Update: Going Where No Airplane Can Go – A New Hybrid Air Vehicle
lenrosen4
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December 4, 2012
7
Climate Change Science
Headlines at 21st Century Tech for September 21, 2012
lenrosen4
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September 21, 2012
6
Mining
Communications in the 21st Century – Part 5: Telepresence, Telerobotics
lenrosen4
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August 23, 2012
10
Climate Change Science
Headlines at 21st Century Technology for July 13, 2012
lenrosen4
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July 13, 2012
0
Energy/Industry
Energy Update: Technology and the Oil Sands
lenrosen4
-
June 14, 2012
2
Mining
Our Space Future in the 21st Century – Part 1: Where Will We Be in Space in 2100?
lenrosen4
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June 9, 2012
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