David Kuchta, Ph.D. has 10 years of experience in gardening and has read widely in environmental history and the energy transition. An environmental activist since the 1970s, he is also a historian, ...
Solar day lamps (SDL) are simple and cost-effective. A few examples of SDLs have been described in [1], [2] and [3]. An SDL without any energy storage element suffers from frequent changes in the ...
The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Adam Camenzuli, the ...
This series has been, for me, an exhilarating journey through two million years of human endeavour, passion and ingenuity. We began in East Africa with a chopping tool - a roughly shaped stone that ...
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