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21st Century Tech Blog
AI
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How Artificial Intelligence Can Help Feed The World
lenrosen4
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January 15, 2025
Cities
LA Burning Is Hard To Ignore If You Cover Climate Change
lenrosen4
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January 14, 2025
Agriculture
Astroculture – There’s A Word I Had Never Heard Before When Talking About Growing Things
lenrosen4
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January 13, 2025
Curing Illness
It Is Hard To Ignore The Link Between White Rice and Type 2 Diabetes
lenrosen4
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December 29, 2024
Manufacturing
What’s Holding Back Aluminum Recycling?
lenrosen4
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December 28, 2024
Agriculture
Agriculture Update: Bred to Resist Insect Pests GMO Cause Less Damage to Biodiversity than Non-GMO Crops
lenrosen4
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January 21, 2013
0
Cities
Environment & Communications Update: The News from China
lenrosen4
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January 17, 2013
0
Nations
Sex Ratio Imbalances and Society – How Marriageable-Aged Women and Men Shape Culture and Politics
lenrosen4
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January 16, 2013
0
Curing Illness
Crowdsourcing, Crowdfunding, X Prizes – 7 Billion Minds Put to Work
lenrosen4
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January 14, 2013
1
Agriculture
Headlines at 21st Century Tech for January 11, 2013
lenrosen4
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January 11, 2013
1
Agriculture
Biomedicine & Computing Update: BiFi, Biology, Engineering and Artifical Life
lenrosen4
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January 9, 2013
1
Agriculture
A Personal Note and Then A Recantation, Not Mine
lenrosen4
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January 8, 2013
1
Gadgets
Gizmos & Gadgets: Autoclave Quality Sterilization in Remote Settings for Less Than $200
lenrosen4
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January 2, 2013
2
Cities
Human Resolutions for Lifeboat Earth in 2013
lenrosen4
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December 27, 2012
0
Automobiles
In Pursuit of a Global Technical Society
lenrosen4
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December 24, 2012
1
Climate Change Science
The Pursuit of the Millennium Still Drives So Many of Us – From Mayan Myths to Second Comings
lenrosen4
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December 22, 2012
0
Agriculture
Climate Change Update: Three Environmental Challenges, Four Headlines
lenrosen4
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December 18, 2012
1
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