Delhi Smog Towers, Connaught Place & Anand Vihar
Two towers pull air through 40 fans and 5,000 filters. On the pollution board's own arithmetic, covering Delhi would take 47,229 of them.
The part of the atlas that reads the whole corpus by outcome rather than by place: what failed, what worked, what it cost, who operates it, how well-evidenced it is and how it ages.
🤖 This definition was generated with AI from the sources linked throughout. It has not had a complete human review — treat it as a starting point and follow the sources. How this works.
Track record is where the atlas stops being a list of places and starts being a reckoning. The same documented projects are read seven ways — what failed, what worked, what it cost, who operates it, how well-evidenced it is, how it ages by start year, and who published the sources.
The design rule behind it is the one that makes it worth reading: membership on each of those pages comes from a field in the data, never from an editor's pick. An entry appears under failures because its own record says the outcome was failed or scaled back — so none of these pages can be curated into a flattering shape, and none can quietly omit an awkward case.
That is also why the failure pages exist at all. Delhi's smog towers and Helsinki's Whim are the half of the record that vendor material leaves out, and grouping them by how they went wrong is more useful than counting them.
One honest caveat carried on those pages: the failure share is a floor, not an estimate. An entry only gets a failure outcome when a named source says so, and quiet abandonment rarely has one.
Added 2026-08-25 · Part of the growing Smart City Glossary