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Sci Tech    H1'ed 10/23/20

A geek researches 5G

By       (Page 1 of 2 pages)   5 comments, In Series: Dear Greta
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Letter to Greta Thunberg: how 5G contributes to climate change

5G Network
5G Network
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Dear Greta,

Last Spring, after I spoke about the Internet's footprint on a teleconference, I met Miguel Coma, a Belgian engineer. Thanks to the Internet, we have corresponded regularly and taught each other a lot about 5G, the fifth generation of mobile networks. The way he takes responsibility for his part of climate change really inspires me. Let me introduce you.

Dear Greta,

I've been a geek from the age of ten, when I started using and programming some of the first personal computers. I am 47 now. I am an engineer because I love technology, but living beings and nature also mean very much to me. I'm married, and I have three children, including two teenagers.

I was very lucky to be raised in a caring family with good values, however my parents did not teach me to think about the environment. At school, our planet's future was never discussed, either. Meanwhile, I inherited my uncle's passion for science and technology. I have always loved electronics, space exploration, astronomy, robots and supercomputers. Technology and science never bore me. (Chemistry doesnobody's perfect.) Technology drives my will to understand and improve the world. Seeing the miracles that people can achieve when technology is used well gives me comfort.

In college, I learned how to build machines, systems and processes. I specialized in electronics and telecommunications. Whenever I talked with other engineers, we never discussed the ecological impacts of building, using or disposing of electronic devices. We focused on making attractive, reliable and affordable products and services. Innovation was all about technology, and only technology. As a student and then an engineer, working for the telecom industry (until twelve years ago), I never met experts in environmental or biological sciences.

At 33, I met my wife. She works for an environmental organisation. Through her, I started to realize the extent of environmental problems like global warming, pollution, e-waste and their impacts on living beings. I also started to connect with nature and got energized by observing tiny insects, flowers and the stars. (I have a telescope.) I increased my efforts to reduce our household's waste, use renewable energy and buy energy efficient devices.

But I was still in the dark about problems caused by my own industry.

Then came the Covid-19 global pandemic. For the first time in my life, I had no job for several months. I used the time to do research. I remembered my wife telling me, in 2018, that she worried for our family's health because of radiation emitted by 5G. At first, I considered the idea that 5G could harm us a conspiracy theory. My training taught me that only ionizing radiation is dangerous, and that exposure to the non-ionizing radiation levels used in telecommunications is perfectly safe. (Nonetheless, the industry recommends that mobile phone users keep a safe distance from their devices. Katie Singer and I will write about this in other letters. For now, you can read the fine print in your owner's manual.)

I believe that technology should benefit our society. It should co-exist harmoniously with all living beings and ecosystems. But I have learned recently that technology can harm everything I care for, on a very large scale. Only a few years back, the odds that I would write to someone like you about re-thinking how to build the Internet would have been slim. Now, I want everyone to know 5G's footprint. I want you to learn the key facts and have the widest possible picture about 5G so that you can make your own opinions. I encourage you to check and research the facts for yourself.

I researched 5G's advantages and impactsthe applications it could make possible, the energy use, greenhouse gas emissions, worker hazards; its impacts to wildlife, public health, the economy and democracy. People call me a perfectionist. I wanted numerous viewpoints, so I cross-checked studies, reports and essays. I contacted scientists, engineers, non-profit associations, and even a philosopher.

As an engineer, I naturally started to read about 5G's technology and potential applications. Compared to 4G, 5G is designed to offer faster wireless connections. It aims to connect many more devices than 4G can, and, when necessary, to respond faster and more reliably. For mobile network operators as well, 5G means technical progress. The industry promotes 5G as a digital revolution, where every person and every device will be connected, enabling applications that we have not yet imagined. The industry claims that 5G will provide the backbone of a connectivity-based future economy.

But we already have billions of devices connected to the Internet. We call this the Internet of Things, and it is growing, rapidly, even without 5G. Moreover, alternative technologies already enable autonomous vehicles and tele-surgery, smart cities and more. To my surprise, I found publications from engineers, analysts and even a mobile operator who report that smartphone users are satisfied with 4G and will experience no substantial benefit from 5G. (The people who had the courage to reveal this give me courage.)

5G mainly stands to benefit large industries. For example, 5G can help robots use Artificial Intelligence (AI) to speed construction, modification, painting and the movement of parts along an assembly line. It could make some factory floors more efficient with nearly instantaneous interactions, and enable automated quality control. By replacing network cables and Wi-Fi with 5G, many more robots could connect in the same space. However, we do not need an extensive, public 5G network to connect a factory or other industries. Each manufacturer could have their own, private 5G network.

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Katie Singer writes about nature and technology in Letters to Greta. She spoke about the Internet's footprint in 2018, at the United Nations' Forum on Science, Technology & Innovation, and, in 2019, on a panel with the climatologist Dr. (more...)

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