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21st Century Tech Blog
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2013
Yearly Archives: 2013
Environment Update: New Study Indicates Northern Vegetation is Changing with Rising Temperatures
lenrosen4
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March 11, 2013
0
There are 26 million square kilometers (10 million square miles) of northern land under vegetation. Over the past 30 years 34 to 41% (9...
Gizmos & Gadgets: 3D Desktop Scanning Makes Replicating 3D in Print a Lot Easier
lenrosen4
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March 11, 2013
0
There are many 3D printers on the market now and some of them are even affordable for home use. But making 3D models up...
Headlines at 21st Century Tech for March 8, 2013
lenrosen4
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March 8, 2013
1
From climate change to astronaut poo it was another interesting week in science and technology stories. Here are the ones I have selected to...
Mobile Phones Spawn a Revolution in Entrepreneurship in East Africa
lenrosen4
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March 7, 2013
0
This week the people of Kenya are waiting to find out who they have elected to lead them for the next few years. But...
In 2025 630 Million of Us Will Live in 37 Megacities
lenrosen4
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March 6, 2013
0
As I was reading my morning paper today I came across a quote from Robert Friedland, an entrepreneur and mining engineer who in giving...
MIT Technology Review Lists 50 Most Disruptive Companies for 2013
lenrosen4
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March 5, 2013
2
The MIT Technology Review has put together its list of 50 candidates representing innovative companies that will have a telling affect on the world...
Environment Update: Nitrogen Pollution as Problematic as CO2
lenrosen4
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March 4, 2013
0
How can a substance that makes up the bulk of our atmosphere here on Earth be a pollutant? I'm talking about nitrogen, the most...
Gizmos & Gadgets: Crowdfunding a Cold Fusion Car
lenrosen4
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March 2, 2013
2
Dr. Dennis Cravens has taken the engine out of a 1928 Model "A" Ford he bought and will replace it with a cold fusion...
Headlines at 21st Century Tech for March 1, 2013
lenrosen4
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March 1, 2013
0
It's been an interesting week for science and technology headlines and here are five I would like to share with you: Implanted Brain Chips Create...
Energy and the Environment: When Will We See Humans on Both Sides of the Divide Have a Meeting of Minds?
lenrosen4
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February 28, 2013
1
In the 21st century we face some tough decisions. Our energy use and the sources from which we get energy has contributed to changes...
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