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- Indexed articles, last 90 days
- 138
- Latest publication
- Sep 25, 2026
- Outlet visibility, for ScienceBlog.com
- Top 10K sites
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- Jul 16, 2026
Latest articles
A hand-blown carbon-filament lightbulb hanging in a California fire station has burned almost continuously since 1901. By 2016, it had already outlived three webcams set up to watch it. (opens the original)
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Two pieces of technology, pointed at each other. One is a glass bulb, blown by hand and first lit in 1901. The other is a webcam, a modern webcam whose whole job is to keep an eye on that bulb. You’d expect the newer device to last longer. It hasn’t. Or rather, they haven’t. As the bulb’s longtime keeper, retired deputy fire chief Tom Bramell, put it in a report republished by FireRescue1, “The lightbulb isn’t burning out, but the webcams are.” The bulb is the Centennial Light, and it hangs in F
Since 2008, the Dutch city of Heerlen has used water in its flooded former coal mines to heat and cool homes, shops and offices (opens the original)
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Mine water heating is much what it sounds like. You use the warmth of water in an abandoned, flooded mine to help heat buildings. When pumping stops, groundwater can fill the tunnels. Underground rock generally gets warmer with depth, and the water absorbs that natural heat. A mine that stopped producing coal, therefore, can become a useful reservoir of low-temperature heat. That is what happened in Heerlen, in the Netherlands’ South Limburg region, although decades after the mine closed. Accord
In 2009, road crews in Polk County, Wisconsin, began using leftover cheese brine to pre-wet road salt. Tests found the mixture helped salt stick to the road and cut salt use by 30 to 40 percent, while the dairy supplying the brine saved money it had been spending to dispose of it. (opens the original)
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In a rural county in northwestern Wisconsin, a highway worker looked at a dairy’s waste and saw a road treatment. A cheese plant making mozzarella and provolone was producing salty wastewater and paying to have it hauled away. Meanwhile, a county road crew was buying rock salt and losing some of it off the pavement before it could do much good. That was the beginning of Polk County’s cheese-brine project, which entered full use in 2009. The arrangement later ended when its local dairy supplier c
In June 2019, Melbourne’s rail operator installed 190 sleepers made from 85 percent recycled plastic beside platform two at Richmond station. Every kilometer of track built with them would reuse 64 metric tons of polystyrene and agricultural and industrial plastic waste that might otherwise go to la (opens the original)
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Picture a weekend maintenance crew at a busy suburban station. Trains stopped, old sleepers lifted out, new ones dropped in and clipped down before regular services resumed. Nothing about the scene looks like a milestone. Yet what went into the track that weekend was a first for Victoria’s metropolitan train network. Over the weekend of 22 to 23 June 2019, Metro Trains laid recycled-plastic railway sleepers beside platform two at Richmond station. Sleepers are the beams beneath the rails that ma
Discarded glass, milled to a powder, was used in structural concrete at Halletts Point in Queens, the first high-rise in the United States to use the material this way. The same powder later replaced 40 percent of the cement in the floor slabs of 270 Park Avenue. (opens the original)
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The idea behind two New York towers is simple: grind old bottles and jars into a fine powder and use it to replace some of the cement in concrete. Cement accounts for around 10% of world’s carbon dioxide emissions, so replacing part of it without weakening the structure cuts emissions. These buildings show it can be done at real scale. The material is called ground-glass pozzolan. A pozzolan is a fine material that reacts with compounds in wet cement paste to form additional cementitious materia
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