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Five questions with Erna Grasz
The hardest question that Erna Grasz has answered came from a…
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Young World Inventors: A Tanzanian Bike Mechanic’s Journey…
[Updated January 2019] This article is a part of the Young…
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Tweet roundup: Kite wind power and community co-creation…
Why low-tech mechanical hydro power can sometimes beat hydro-electric, how kite…
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Tweet roundup: The wrong biofuel and the right…
Do-it-yourself glaciers, unsuitable algae biofules, low-tech mosquito deterrents and colorful sanitation…
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Ten technologies to manage a crowding world
The UN estimates a world population of more than 9 billion…
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Clean Tech in Nepal
Fuel briquettes little larger than hockey pucks dry on string runners…
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Cobbled together: How Indians solve problems with the…
In India, jugaad is an electrical cord, split and stripped at…
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Tweet roundup: It’s back
Our news staff went on vacation for most of this month…
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Lessons from a Rusty Metal Bookshelf
It was the morning after we had finished installing a 10…
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Channel your way to sustainable success
One of the biggest challenges in delivering technology to “Bottom of…