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21st Century Tech Blog
Science, Technology and the Future
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Environment
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Climate Change Science
Thermal Expansion Has Oceans Rising Imperilling Coastal Communities
lenrosen4
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June 7, 2025
Environment
Three 21st Century Ocean Technologies That Caught My Eye
lenrosen4
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June 5, 2025
Artificial Intelligence
New Google AI Allows Humans To Have Conversations With Dolphins
lenrosen4
-
April 16, 2025
Climate Change Science
Since 2009 The Pacific Nation of Solomon Islands Is Shrinking
lenrosen4
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March 28, 2025
Climate Change Science
The Earth’s Rate of Warming in the 21st Century is 0.2 Celsius per Decade
lenrosen4
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December 19, 2024
Energy/Industry
Energy Update: Renewable Wave and Tidal Power Getting Big Plays in U.S., Australia and Europe
lenrosen4
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July 31, 2012
2
Climate Change Science
Headlines at 21st Century Technology for July 13, 2012
lenrosen4
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July 13, 2012
0
Agriculture
Headlines at 21st Century Tech for June 29, 2012
lenrosen4
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June 29, 2012
0
Agriculture
Rio+20: A Report Card On How We Are Doing So Far?
lenrosen4
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June 21, 2012
0
Agriculture
Headlines at 21st Century Tech for June 1, 2012
lenrosen4
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June 1, 2012
0
Environment
Inner Space: Part 3 – What Does a Warming Ocean Mean for Our Planet?
lenrosen4
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May 25, 2012
0
Environment
Inner Space: Part 2 – Plastic Garbage – What Are We Doing About It?
lenrosen4
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May 24, 2012
1
Climate Change Science
Inner Space: Part 1 – Oceans and Technology – A Quick History
lenrosen4
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May 23, 2012
0
Climate Change Science
Climate Change Update – The Trifecta that Ended the Last Ice Age
lenrosen4
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April 6, 2012
0
Climate Change Science
Climate Change Update – The Oceans Have Been Warming for More than a Century
lenrosen4
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April 2, 2012
1
Military
Robotics Update – Biomimickry and a Jellyfish named Robojelly
lenrosen4
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March 24, 2012
0
Agriculture
Identifying the Problems of the 21st Century – A Commentary on James Martin’s 16 Challenges
lenrosen4
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March 9, 2012
2
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