#carbon
Live, measured metrics for the hashtag #carbon from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #carbon
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-09-10 00:27 UTC11 uses by 11 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-09-10 00:27 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-10 00:27 UTCEverything below is measured over the latest 40 public posts (spanning ~463 hours).
Posting hours (UTC) — busiest: 12:00
Languages: English (35) · German (4)
Avg boosts / post: 1.7
Top of the latest posts
Trawling threatens vital carbon stores in Scotland's sea lochs https://phys.org/news/2026-09-trawling-threatens-vital-carbon-scotland.html #Scotland #sea #environment #marinelife #trawling #carbon
💩 NEW: #Concrete’s main ingredient, #cement, is a major source of #CO2. Researchers replaced part of the cement with #biochar made from heat-treated human #sewage. Mixes with 5 and 10% replacement gained up to 42% more strength after curin
Government sets 2040 targets for rail freight growth http://dlvr.it/TVNXZw #Carbon #GreatBritishRailways #RailNews #UKGovernment
What “carbon” means
Wiktionary · Wikipediacarbon/ˈkɑɹbən/
- nounThe chemical element (symbol C) with an atomic number of 6. It can be found in pure form for example as graphite, a black, shiny and very soft material, or diamond, a colourless, transparent, crystalline solid and the hardest known material.
- verbTo cause (someone) to receive a carbon copy of an email message.
Carbon is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons. It belongs to group 14 of the periodic table. Carbon makes up about 0.025 percent of Earth's crust. Three isotopes occur naturally, 12C and 13C being stable, while 14C is a radionuclide, decaying with a half-life of 5,700 years. Carbon is one of the few elements known since antiquity
“Carbon” on Wikipedia (CC BY-SA) →#carbon across platforms
every network with a public tag surfaceFollow #carbon straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/carbon