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21st Century Tech Blog
Science, Technology and the Future
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Environment
Oceans
Oceans
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
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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
Climate Change Science
Headlines: “More than 93 percent of the warming of the planet since 1970 is found in the ocean”
lenrosen4
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February 10, 2014
0
Climate Change Science
Headlines: Greenland Glacier Setting New Track Records
lenrosen4
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February 5, 2014
0
Oceans
Headlines: Sharks Sign Up for Twitter in Western Australia
lenrosen4
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January 3, 2014
0
Oceans
Transportation Update: Crewless Drone Ships in our Near Future?
lenrosen4
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December 31, 2013
0
Cities
Is New York City the Only One Preparing for the Consequences of Climate Change?
lenrosen4
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December 27, 2013
1
Energy/Industry
Headlines: “Virtual Wall” Could Contain Oil Spills
lenrosen4
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December 15, 2013
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
Climate Change Science
Headlines: El Nino and La Nina in a Warming World Will Become More Extreme
lenrosen4
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December 4, 2013
0
Climate Change Science
Climate Change Update: Why Did the Antarctic Ocean Sea Ice Set a Record This Year?
lenrosen4
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November 29, 2013
0
Climate Change Science
Climate Change Update: Earth Will Continue To Warm for Centuries Because of Current Levels of Atmospheric CO2
lenrosen4
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November 27, 2013
0
Cities
Environment Update: Unintended Consequences of Shanghai’s Attempt to Restore Coastal Wetlands
lenrosen4
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November 24, 2013
0
Energy/Industry
Energy Update: The Current State of Nuclear Power
lenrosen4
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November 13, 2013
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