Lachlan Brown
- Indexed articles, last 90 days
- 3
- Latest publication
- Jul 25, 2026
- Outlet visibility, for Terra Daily
- Top 5M sites
- Earliest in this view
- Jul 24, 2026
Latest articles
We tend to think of AI as a software problem, weightless and waterless, but even a 100-word email written with ChatGPT has been estimated to require roughly a bottle’s worth of water once data-centre cooling and electricity generation are counted — and scaled to global demand, researchers project AI (opens the original)
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I run an online business, so I spend a large part of each day using services described as being in the cloud. The language makes the physical machinery easy to forget. A prompt appears on one screen, a reply appears on another, and nothing seems to have moved between them. But every answer is produced by chips drawing electricity inside a building that must remove their heat. One widely reported estimate gives that hidden infrastructure an unusually tangible form: about 519 millilitres of water
Two radio astronomers spent months trying to eliminate a faint hiss in their antenna, even scrubbing out pigeon droppings, before realising the noise they couldn’t get rid of was the afterglow of the early universe — the cosmic microwave background left behind by the Big Bang (opens the original)
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The pigeons are the part everyone remembers. Two birds nested inside a giant antenna in New Jersey, left a mess, and became suspects in one of the most important measurements in modern cosmology. Arno Penzias and Robert Wilson removed the birds and cleaned the droppings from the instrument. The unwanted signal became slightly weaker, but it did not go away. Nor did it disappear when they checked the receiver, the atmosphere, the warm ground, nearby cities or the Milky Way. I have spent enough ti
Nearly three kilometres beneath a Canadian mine, geologists found water that may have been isolated in the rock for roughly two billion years — older than animals, plants and almost everything we think of as complex life. The brine was so salty and bitter that, when one researcher tasted it, she was (opens the original)
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The part of this story that stayed with me was not the depth, although 2.9 kilometres of rock is difficult enough to picture. It was the taste. Barbara Sherwood Lollar, a geochemist at the University of Toronto, has spent decades studying water that flows from fractures in the Kidd Creek mine near Timmins, Ontario. Drops of the ancient brine landed on her as it bubbled from the rock. That was enough to register its intense saltiness and bitterness. She did not fill a glass and drink it. That is
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