Materials Used by Humans Weigh More than All Life on Earth

Materials Used by Humans Weigh More than All Life on Earth

By Nick King and Aled Jones / THE CONVERSATION

 

The extent of humanity’s influence on the planet has become increasingly clear in recent years. From the alarming accumulation of plastic waste in our oceans to the sprawling growth of urban areas, the size of our impact is undeniable.

The concept of the “technosphere” aims to reveal the immense scale of our collective impact. The concept was first introduced by US geologist Peter Haff in 2013, but paleobiologist Jan Zalasiewicz has since popularised the term through his work. The technosphere encompasses the vast global output of materials generated by human activities, as well as the associated energy consumption.

Since the agricultural revolution some 12,000 years ago (when we started building cities and accumulating goods), human enterprise has steadily grown. However, our impact has surged dramatically over the past couple of centuries. This surge has since transformed into exponential growth, particularly since 1950.

The technosphere is indicative of how humans are increasingly emerging as a global force on par with the natural systems that shape the world. The transformation that is needed to reduce our impact is therefore equally large. And yet, despite growing awareness, there has been a lack of concrete action to address humanity’s impact on the planet.

To comprehend the sheer magnitude of the technosphere, it is best visualised. So here are four graphs that capture how our collective addiction to “stuff” is progressively clogging up planet Earth.

1. Weighing the technosphere

In 2020, a group of Israeli academics presented a shocking fact: the combined mass of all materials currently utilised by humanity had surpassed the total mass of all living organisms on Earth.

According to their findings, the collective weight of all life on Earth (the biosphere) – ranging from microbes in the soil, to trees and animals on land – stands at 1.12 trillion tonnes. While the mass of materials actively used by humans, including concrete, plastic and asphalt, weighed in at 1.15 trillion tonnes.

The technosphere weighs more than all life on Earth (trillion tonnes):

A graph showing how the technosphere now weighs more than the biosphere.The relative weights of the active technosphere and biosphere. The active technosphere includes materials that are currently in use by human activities. The biosphere includes all living things.
Elhacham et al. (2020), CC BY-NC-ND

This graph offers a glimpse into the immense size of humanity’s footprint. But it likely only scratches the surface.

When accounting for the associated byproducts of the materials used by humans, including waste, ploughed soil and greenhouse gases, the geologist and palaeontologist, Jan Zalasiewicz, calculated that the technosphere expands to a staggering 30 trillion tonnes. This would include a mass of industrially emitted carbon dioxide equivalent to 150,000 Egyptian Pyramids.

2. Changing the Earth

Remarkably, human activity now dwarfs natural processes in changing the surface of our planet. The total global sediment load (erosion) that is transported naturally each year, primarily carried by rivers flowing into ocean basins, is estimated to be around 30 billion tonnes on average. However, this natural process has been overshadowed by the mass of material moved through human action like construction and mining activities.

In fact, the mass of material moved by humans surpassed the natural sediment load in the 1990s and has since grown rapidly. In 2015 alone, humans moved approximately 316 billion tonnes of material – more than ten times the natural sediment load.

Humans change the Earth’s surface more than natural processes (billion tonnes):

A graph showing how more materials are moved by mineral extraction and construction than by natural geological processes.Global movement of material: average annual natural sediment transport (blue), the total mass of things transported by humans in 1994 (purple) and in 2015 (orange).
Cooper at al. (2018) & ScienceDaily (2004), CC BY-NC-ND

3. Transporting ‘stuff’

Our ability to transport fuel and products worldwide has facilitated the trends shown in the preceding graphs. Humans now transport these materials over increasingly vast distances.

Shipping continues to be the primary mechanism for moving materials around the globe. Since 1990, the amount of materials that are shipped around the world has increased more than threefold – and is continuing to grow.

How shipping has grown since 1980 (million tonnes):

A graph showing the growth in shipping capacity from 1980 to 2022.Shipping capacity growth between 1980 and 2022.
World Ocean Review (2010) & UNCTAD (2022), CC BY-NC-ND

4. The growth of plastics

Plastic stands out as one of the main “wonder materials” of the modern world. Due to the sheer speed and scale of the growth in plastic manufacturing and use, plastic is perhaps the metric most representative of the technosphere.

The first forms of plastic emerged in the early 20th century. But its mass production began following the second world war, with an estimated quantity of 2 million tonnes produced in 1950. However, the global production of plastic had increased to approximately 460 million tonnes by 2019.

This surge in plastic manufacturing is a pressing concern. Plastic pollution now causes many negative impacts on both nature and humans. Ocean plastics, for example, can degrade into smaller pieces and be ingested by marine animals.

Plastic manufacturing (million tonnes) has grown exponentially since 1950:

A graph showing how plastic materials production has increased since 1950.Annual plastic production.
Geyer et al. (2017) and OECD (2023), CC BY-NC-ND

Humanity’s escalating impact on planet Earth poses a significant threat to the health and security of people and societies worldwide. But understanding the size of our impact is only one part of the story.

Equally important is the nature, form and location of the different materials that constitute the technosphere. Only then can we understand humanity’s true impact. For example, even the tiniest materials produced by humans, such as nanoplastics, can have significant and far-reaching consequences.

What is clear, though, is that our relentless pursuit of ever-increasing material output is overwhelming our planet.The Conversation

Aled Jones, Professor & Director, Global Sustainability Institute, Anglia Ruskin University and Nick King, Visiting Researcher, Anglia Ruskin University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

 

Banner by Michael Barera, CC BY-SA 4.0, via Wikimedia Commons

Why Your Tech Is Killing Earth

Why Your Tech Is Killing Earth

By Katie Singer

A tech lover recently told me that he and several colleagues have realized:

1.     The Earth does not have enough energy, minerals or water to support AI, e-vehicles, solar PVs, industrial wind facilities and batteries. Not at the scale we dream to fulfill. Not with eight billion humans.

2.     Expanding the Internet and AI ravages the Earth and wastes young brains.

I consider this man’s honesty excellent news. If more people acknowledge that our electronic tools take from the Earth faster than it can replenish and waste faster than the Earth can absorb, maybe we could take a collective pause. We could question which manufactured goods are necessary and which ones are not. We could stop ravaging ecosystems, reduce production and consumption. We could have truth and reconciliation parties about our relationship with nature and ask each other for help in living within our bioregion’s ecological limits. We could cultivate humility.

Meanwhile, reports about the technosphere’s harms continue to flood my inbox. I do also get some Good News. Thanks for taking a look:

SOLAR PV PROBLEMS CONTINUE TO GLARE

In June, 2024, the Aratina Solar Project in Kern County CA will destroy 4,287 five-hundred-year-old Joshua trees to power 93,000 homes with “clean” (solar PV) energy.

According to a report by Sheffield Hallam University, “almost the entire global solar panel industry is implicated in the forced labor of Uyghurs and other Turkic and Muslim-majority peoples” who crush quartz rocks and work in coal-fueled furnaces to produce polysilicon for solar panels. Investors nor governments adequately address Uyghur forced labour risks in the renewable energy sector.

In Slavery Poisons Solar Industry’s Supply Chains, Miles Pollard reports that roughly 80% of solar components are manufactured in China using slave labor.

See European Parliament resolutions regarding forced labor in China to make solar PVs. See the 2021 U.S. Uyghur Forced Labor Prevention Act, which expanded the mandate that all U.S. companies importing silicon from Xinjiang confirm supply chains free of forced labor. In June 2021, a US Withhold Release Order prevented imports containing silicon from Hoshine Silicon Industry Co. Ltd and its subsidiaries from entering the U.S. until importing companies could prove they were not made with forced labor.

What to do? Solar corporations should obtain nearby communities’ free, prior and informed consent before mining or smelting. They can use standards like the Silicon Valley Toxics Coalition’s Solar Scorecard. The Solar Equipment Buyers’ Guide for Supply Chain Traceability explains how manufacturers can track finished solar modules’ material origins.

Before buying solar PVs, require the manufacturer to trace its supply chains.

Read Tuco’s Child, a Substack written by a retired chemist who worked in nanomaterials, polymer chemistry, semi-conductor process engineering and the mining industry and treated wastewater from semiconductor effluent. See his photo essay, Fossil Fuels Create 1 Trillion Computer Chips per Year. Computer chips and solar panel wafers are both made from silicon. Making silicon is like working in a volcano. Every 50,000 tons of silicon produces 500,000 tons of CO2. (Solar PVs also use copper, aluminum, boron, phosphorous, PFAs and much more.) Since recycling solar panels is not feasible or economical, expect an avalanche of solar panels at the landfill near you (another fab photo essay from Tuco’s Child).

WIND PROBLEMS DO NOT BLOW AWAY

Tuco’s Child also reports that wind turbine blade waste will exceed 43 million tons/year by 2050.

Major offshore wind projects in New York have been canceled.

U.S. wind generation declined in 2023 for the first time since the 1990s despite the addition of 6.2 gigawatts (GW) of new wind capacity in 2023. Power Plant Operations Report shows that U.S. wind generation in 2023 totaled 425,235 gigawatt hours (GWh), 2.1% less than in 2022. For a list of wind and solar facilities rejected by NIMBYs, see Robert Bryce’s Renewable Rejection Database. See also Bryce’s “Wind/Solar/Al-Energy Subsidies to Cost Federal Taxpayers $425 Billion Between Now and 2033.”

UTILITIES

A 2022 California energy bill has households paying a fixed monthly charge in exchange for lower rates for each kilowatt hour used. Opponents call the legislation a financial gift to investor-owned utilities. Californians who use little electricity pay more, while people who use lots of electricity save money. The policy signals “that conservation doesn’t count,” said Environmental Working Group’s Ken Cook. The new law’s inspiration came from a 2021 paper written by UC/Berkeley’s Energy Institute (partly funded by utilities). The paper detailed how costs for building “renewable” energy plants, burying power lines to reduce wildfire risks, and compensating fire victims increased electric rates—and discouraged Californians from buying EVs and electric appliances.

For a deeper dive, please read my Substack, “Discovering Power’s Traps: a primer for electricity users.”

Isaac Orr and Mitch Rolling (Energy Bad Boys), “Green-PlatingTM the Grid: How Utilities Exploit the ‘Energy Transition’ to Rake in Record Profits.”

AI

Ed Ballard, “Air Conditioning and AI are Demanding More of the World’s Power—Renewables Can’t Keep Up: Renewables can’t keep up with growth, which means more coal and more emissions.”

Amy Luers, et al., “Will AI accelerate or delay the race to net-zero emissions?As AI transforms the global economy, researchers need to explore scenarios to assess how it can help, rather than harm, the climate.” Nature, April 2024. This article says that AI’s energy costs are a small percentage of global energy costs—but doesn’t count the energy (or mining, water, or indigenous community impacts) involved in manufacturing devices and operating AI’s infrastructure. The push is for standards—a long slow, industry-run process—not actions. Power grid outages are considered ‘local’ problems…without recognizing data centers’ global impacts.

Indigenous peoples rush to stop ‘false climate solutions’ ahead of next international climate meeting: COP29 could make carbon markets permanent. Indigenous leaders are calling for a moratorium before it’s too late.” Maria Parazo Rose, April 22, 2024.

Matteo Wong, “The AI Revolution is Crushing Thousands of Languages: English is the internet’s primary tongue—which may have unexpected consequences as generative AI becomes central to daily life,” The Atlantic, April, 2024.

Karen Hao, “AI is Taking Water from the Desert: New data centers are springing up every week. Can the Earth sustain them?” The Atlantic, March 1, 2024.

Valovic, Tom, Big Tech Companies Are Becoming More Powerful Than Nation-States. Already richer than many countries, AI’s rise looks to increase big tech companies’ influence.

EVs

How G.M. Tricked Millions of Drivers into Being Spied On (Including Me)

by Kashmir Hill, The NY Times, April 23, 2024. When this privacy reporter bought a Chevrolet Bolt, two risk-profiling companies got detailed data about her driving. (Note: new, gas-powered vehicles also provide detailed data to profilers.)

Bruno Venditti, “Visualized: How much do (replacement) EV batteries cost?” October 15, 2023.

Purdue University, the Indiana Dept. of Transportation and Cummins Inc. will build the U.S.’s first electric charging highway. Transmitter coils installed under pavement in dedicated lanes will send power to receiver coils attached to vehicles’ undersides. What if people with medical implants (deep brain stimulators, insulin pumps, cochlear implants, pacemakers) experience electronic interference?

MINING

People of Red Mountain: Life Over Lithium (an excellent, short film about mining Thacker Pass for EVs). See also my Substacks, “When Land I Love Holds Lithium: Max Wilbert on Thacker Pass” and “What choices do we have—when a corporation wants to do business?

Eileen Crist on deep-sea mining with appropriately systemic responses.

DRC Bleeds Conflict Minerals for Green Growth,” by Alexandria Shaner.

TECH & PLANETARY & PUBLIC HEALTH

Jessica Grose, “Every Tech Tool in the Classroom Should Be Ruthlessly evaluated,” NY Times, April 25, 2024. OpEd.

Patricia Burke, “The FCC is the Bully Boarding the School Bus: The Eyes are (Not) Having It.” Excessive screen-time leads to eye damage, yet the FCC funds installation of Wi-Fi on school buses, supposedly so that children can do homework while riding.

Environmental Health Trust (EHT) revealed that the Federal Communications Commission (FCC) hid test results showing that smartphones in close proximity to the body (i.e., in a pocket) exceed federal radiation exposure limits. EHT’s Theodora Scarato says: “Why did the FCC perform these tests and then decide to not release the results…while it was conducting a rule-making on this very subject? Why did the FCC refuse to release all the records on this issue? It is outrageous that the U.S. allows phones to be tested with whatever separation distance the companies want. Children and adults (keep) phones pressed to their bodies for hours every day. We need a strong oversight and compliance program…that reflects the way people use phones.”

Is Elon Musk’s Starlink Constellation Slowly Poisoning Earth? Starlink satellites could be eroding Earth’s magnetic field and slowly poisoning us all.

People undergoing therapeutic radiation should avoid exposure to wireless radiation prior to, during, and after treatment. In combination, it could seriously damage DNA. Medical/radiology practitioners need education about the risks of EMF-exposures combined with ionizing radiation.

GOOD NEWS…that might dovetail an era of humility  

In Finland, a daycare replaced its sandy playground with grass, dwarf heather, planter boxes and blueberries. The children tended them. After one month, the children had healthier microbiomes and stronger immune systems than their counterparts in other urban daycares. Researchers conclude that loss of biodiversity in urban areas can contribute to poorer health outcomes; and easy environmental changes can radically improve children’s health.

In Denmark, engineers, architects and manufacturers have written the Reduction Roadmap. They advocate for living on less space. Re-using building materials, elements and structures. Selecting low-carbon, biogenic and regional building materials. Applying life cycle thinking to reduce carbon emissions and building materials’ environmental impacts. Using renewable energy for heating, cooling and electricity. (I question this one.) Collaborate.

In the UK, Daisy Greenwell reports that 75,000 parents have come together to give their kids a smartphone-free childhood, April 29, 2024.

In the Washington Post, Joanna Slater reports “How a Connecticut middle school won the battle against cellphones,A study shows that banning smartphones decreases bullying among both genders. Girls’ GPA improves, and their likelihood of attending an academic high school increases. Consider banning smartphones at school a low-cost policy to improve student outcomes.

Katie Singer writes about the energy, extractions, toxic waste and greenhouse gases involved in manufacturing computers, telecom infrastructure, electric vehicles and other electronic technologies. Visit OurWeb.tech and ElectronicSilentSpring.com.
Technology and Its Discontents

Technology and Its Discontents

Featured image: JD Lasica, Flickr, c.c. 2.0

     by Steven Gorelick / Local Futures

Tucked within the pages of the January issue of the Agriview, a monthly farm publication published by the State of Vermont, was a short survey from the Department of Public Service (DPS). Described as an aid to the Department in drafting their “Ten Year Telecom Plan”, the survey contains eight questions, the first seven of which are simple multiple-choice queries about current internet and cell phone service at the respondent’s farm. The final question is the one that caught my eye:

“In what ways could your agriculture business be improved with better access to cell signal or higher speed internet service?”

Two things are immediately revealed by this question:

(a) The DPS believes that the only possible outcome from faster and better telecommunication access is that things will be “improved.”

(b) If you disagree with the DPS on point (a), they don’t want to hear about it.

A cynic might conclude that the DPS is only looking for survey results that justify decisions they’ve already made, and that’s probably true. But the department’s upbeat, one-dimensional outlook on technological change is actually the accepted norm in America. In his book In the Absence of the Sacred, Jerry Mander points out that new technologies are usually introduced through “best-case scenarios”: “The first waves of description are invariably optimistic, even utopian. This is because in capitalist societies early descriptions of new technologies come from their inventors and the people who stand to gain from their acceptance.” [1]

Silicon Valley entrepreneurs have made an art of utopian hype. Microsoft founder Bill Gates, one of high-tech’s most influential boosters, gave us such platitudes as “personal computers have become the most empowering tool we’ve ever created,”[2] and my favorite, “technology is unlocking the innate compassion we have for our fellow human beings.”[3]Other prognosticators include Facebook founder Mark Zuckerberg, who informs us that social media is “making the world more transparent” and “giving everyone a voice.” Needless to say, Gates, Zuckerberg and many others have become billionaires thanks to the public’s embrace of the technologies they touted.

The DPS survey reveals another shortcoming in how we look at technology: we tend to evaluate technologies solely in terms of their usefulness to us personally. Jerry Mander put it this way: “When we use a computer we don’t ask if computer technology makes nuclear annihilation more or less possible, or if corporate power is increased or decreased thereby. While watching television, we don’t think about the impact upon the tens of millions of people around the world who are absorbing the same images at the same time, nor about how TV homogenizes minds and cultures… If we have criticisms of technology they are usually confined to details of personal dissatisfaction.”

The DPS survey demonstrates this narrow focus: it only asks how faster telecommunications will affect the respondent’s “agriculture business”, while broader impacts – on family and community, on society as a whole and on the natural world – are out of bounds. A narrow focus is especially problematic when it comes to digital technologies, because the benefits they offer us as individuals – ultra-fast communication, the ability to access entertainment and information from all over the world – are so obvious that they can blind us to broader and longer-term impacts.

Recently, though – despite decades of hype and a continuing barrage of advertising –cracks are beginning to appear in the pro-digital consensus. The illusion that technology “unlocks compassion for our fellow human beings” has become harder to maintain in the face of what we now know: digital technologies are the basis for smart bombs, drone warfare and autonomous weaponry; they enable governments to conduct surveillance on virtually everyone, and allow corporations to gather and sell information about our habits and behavior; they permit online retailers to destroy brick-and-mortar businesses that are integral to healthy local economies.

We’ve also learned that social media doesn’t just enable us to connect with family and friends, it also provides a powerful recruitment tool for extremist groups – from neo-Nazis and white supremacists to ISIS. And all but the most die-hard Trump supporters acknowledge that social media was used to disrupt the democratic process in 2016, and that it is effectively used by authoritarian political leaders all over the world – including Mr. Trump – to spread false information and “alternative facts.”

People are even beginning to see that social media is not all that “empowering” for the individual. We recognize the addictive nature of internet use, though most of us don’t yet take it seriously: a friend will say, “I’m totally addicted to Facebook!” and we’ll just laugh. But it’s not a laughing matter: according to The American Journal of Psychiatry“Internet addiction is resistant to treatment, entails significant risks, and has high relapse rates.”[4]The risks are highest among the young: a study of 14-24 year-olds in the UK found that social media “exacerbate children’s and young people’s body image worries, and worsen bullying, sleep problems and feelings of anxiety, depression and loneliness.”[5] Not surprisingly, a 2017 study in the US found that the suicide rate among teenagers has risen in tandem with their ownership of smartphones.[6]

Little of this should have been surprising within the digital design world. Facebook’s founding president, Sean Parker, now admits that the company knew from the start that they were creating an addictive product, one aimed at “exploiting a vulnerability in human psychology.” [7] Nir Eyal, corporate consultant and author of Hooked: How to Build Habit-Forming Products, acknowledges that “the technologies we use have turned into compulsions, if not full-fledged addictions… just as their designers intended.”[8]

These addictions have serious consequences not just for the individual, but for society as a whole: “The short-term, dopamine-driven feedback loops that we have created are destroying how society works. No civil discourse, no cooperation, misinformation, mistruth.” This is not the opinion of some left-leaning Luddite, but Facebook’s former vice-president for user growth, Chamath Palihapitiya.[9]

Digital technologies are a threat to democracy in ways that go deeper than even Vladimir Putin might hope. According to former Google strategist James Williams, “The dynamics of the attention economy are structurally set up to undermine the human will. If politics is an expression of our human will… then the attention economy is directly undermining the assumptions that democracy rests on.”[10]

There is also evidence that a child’s use of computers negatively affects their neurological development.[11] Tech insiders like Sean Parker may not know for certain “what it’s doing to our children’s brains,” but Parker isn’t taking any chances: “I can control my kids’ decisions, which is that they’re not allowed to use that shit.”[12] Lots of other Silicon Valley technologists are keeping their children away from screens, in part by sending them to private schools that prohibit the use of smartphones, tablets and laptops.[13] Meanwhile, the companies they work for continue to push their addictive products onto children worldwide: Alphabet, Google’s parent corporation, provides “free” tablets to public elementary schools, while Facebook recently launched a new app called Messenger Kids – aimed specifically at pre-teens.[14]

Much of the “best case scenario” for digital technology rests on its supposed environmental benefits (remember the “paperless society”?) But illusions about “clean” technology are dissolving in the horrific toxic wasteland of Boatou, China, where rare earth metals – needed for almost all digital devices – are mined and processed.[15] Another dirty secret is the cumulative energy demand of all these technologies: it’s estimated that within the next couple of years, internet-connected devices will consume more energy than aviation and shipping; by 2040 they will account for 14% of global greenhouse gas emissions – about the same proportion as the United States today.[16]

What does all this mean for ordinary citizens? For one, we need to begin looking beyond the immediate convenience that technologies offer us as individuals, and consider their broader impacts on community, society and nature. We should remain highly skeptical about the utopian claims of those who stand to profit from new technologies. And, perhaps most importantly, we need to allow our own children to grow up – as long as possible – in nature and community, rather than in a corporate-mediated technosphere of digital screens. Doing so will require us to challenge school boards and administrators who have been sold on the idea that putting elementary school children in front of screens is the best way to “prepare them for the future.”

As for the Department of Public Service, my survey response will say that the costs of improved telecom access would far outweigh the benefits. It would be of no consequence to my farm business, which by design only involves direct sales to nearby shops and individuals. More importantly, our farm is not only an “agriculture business” it is also our home, and that’s where the impact would be greatest. Better digital access would make it easier for me and members of my family to engage in addictive behavior, from online gambling and pornography to compulsive shopping, video games and internet “connectivity” itself. It would consume the attention of my children, leaving them more vulnerable to insecurity and depression, while displacing time better spent in nature or in face-to-face encounters with friends and neighbors. There are broader impacts as well: we would be increasingly tempted to buy our needs online, thus hurting local businesses and draining money out of our local economy. And almost everything we might do online would add a further increment to the growing wealth and influence of a handful of corporations – Amazon, Google, Facebook, Apple, and others – that are already among the most powerful in the world.

These are significant impacts. But the DPS doesn’t want to hear about them.

Notes

[1] Mander, Jerry (1991) In the Absence of the Sacred, Sierra Club: San Francisco.

[2] Speech at University of Illinois Urbana-Champaign, Feb. 24, 2004.

[3] “Bill Gates: Here’s my plan to improve our world – and how you can help”, Wired magazine, November 12, 2013

[4] Konnikova, Maria, “Is Internet Addiction a Real Thing?” The New Yorker, November 26, 2014.

[5] Campbell, Dennis, “Facebook and Twitter ‘harm young people’s mental health’”, The Guardian, May 19, 2017.

[6] “Teen suicide rate suddenly rises with heavy use of smartphones, social media,” Washington Times, Nov. 14, 2017.

[7] Solon, Olivia, “Ex-Facebook president Sean Parker: site made to exploit human ‘vulnerability’”, The Guardian, November 9, 2017.

[8] Lewis, Paul, “’Our minds can be hijacked’: the tech insiders who fear a smartphone dystopia”, The Guardian, October 6, 2017.

[9] Wong, Julia Carrie, “Former Facebook executive: social media is ripping society apart”, The Guardian, December 12, 2017

[10] Lewis, P. op. cit.

[11] Carr, Nicholas (2010) The Shallows: What the Internet Is Doing to Our Brains, W.W. Norton.

[12] Wong, Julia Carrie, op. cit.

[13] Lewis, P. op. cit.

[14] Kircher, Madison Malone, “Facebook Releases App for Kids Under 13. What Could Possibly Go Wrong Here?” New York Magazine, December 4, 2017.

[15] Maughan, Tim, “The dystopian lake filled by the world’s tech lust”, BBC Future, April 2, 2015.

[16] “’Tsunami of data’ could consume one-fifth of global electricity by 2025”, The Guardian, December 11, 2017.