01 / 03 · Four doors
the internet's attic
Four routes into old pages, prints, and films—where the best discovery often includes the path back to the source.
- Why open it
- BHL reports more than 300,000 illustrations on Flickr alongside over 64 million pages of biodiversity literature, so one image can lead into the volume that gave it context (image-search guide).
- Keep in mind
- BHL’s search is at book/volume level and Flickr tags are incomplete. Check each volume’s copyright status and license; CC0 metadata does not make every scan free to reuse (copyright and reuse guidance).
- Start here
- Click a photo in the highlights album, read its book-and-page caption, and follow the trail back into the volume. For a wider hunt, Flickr Commons Advanced Search categorizes British Library material as “illustration/art,” not “photos” (Commons profile).
- Why open it
- The Library describes the sampler as a window onto more than a million public-domain images extracted from over 65,000 digitized books from the 17th–19th centuries (album description).
- Keep in mind
- The public-domain statement applies to the Mechanical Curator Commons material described there; do not extend it to every British Library scan.
- Start here
- Search the Internet Archive collection for “home movies” or “industrial film,” then open an individual title page to inspect its files and rights details.
- Why open it
- These “ephemeral” films cover advertising, education, industry, and home movies—records made for ordinary institutional or domestic life. Prelinger reported more than 10,300 films online in May 2026 (collection information).
- Why open it
- It is an editorial gateway into historical visual material, grouped by theme, style, and period rather than by a single archive’s search box (Images collections).
- Keep in mind
- Many featured works are public domain, but not necessarily worldwide, and a digital copy can carry separate claims. Check the source and reuse guidance; Collections and Essays do not all share the same terms (Reusing material).
02 / 03 · Five doors
visual rabbit holes
“Now” means different things here: numerical forecasts, satellite layers with their own refresh, delayed vessel data, contributed recordings, and an evolutionary reference tree.
- Start here
- Open the map menu, choose a wind layer, and animate the globe; then switch to ocean currents or waves for another rhythm.
- Why open it
- It turns global weather, ocean, pollution, and space data into an immediate visual surface, with controls for changing layers and dates (About and data notes).
- Keep in mind
- The weather view is a numerical forecast—not a direct live measurement—and the site makes no accuracy guarantee. Weather and wave forecasts update every three hours; ocean-current and sea-surface-temperature estimates update daily (data sources, schedules, and disclaimer).
- Start here
- Add a wildfire or storm layer, choose a date, and animate or compare the imagery over time.
- Why open it
- Worldview lets you stack and rewind satellite products. NASA describes more than 1,200 visualized products; many arrive within hours of observation, while geostationary imagery comes in 10-minute increments for the most recent 90 days (NASA Earthdata overview).
- Keep in mind
- “Near now” depends on the layer. On 1 October 2026, NASA said Suomi NPP product delivery was scheduled to cease on 1 November 2026 and advised moving to NOAA-21 or NOAA-20 products; this concerns a data source, not Worldview itself (NASA Earthdata overview).
- Start here
- Turn on the apparent fishing-effort layer, zoom to a stretch of ocean, and inspect a vessel track or event across the map’s time range.
- Why open it
- The map makes vessel activity visible at a scale that is otherwise hard to picture; its description covers activity from 2012 onward for more than 65,000 commercial fishing vessels (map and introduction).
- Keep in mind
- AIS data runs up to 72 hours behind the present, while vessel-monitoring-system data is delayed according to partner-government agreements. The layer shows apparent fishing effort, not a complete, real-time census of vessels or catch (real-time data FAQ).
- Start here
- Choose a marker and listen; if your device handles it comfortably, try geo-mixing recordings from different places.
- Why open it
- It is a collaborative atlas of field recordings tied to urban, rural, and natural locations—a way to travel by listening rather than by image (project help).
- Keep in mind
- These are contributed archival recordings, not microphones streaming live from each place; audio playback is required, and geo-mixing can slow older computers. The project says an uploaded license cannot later be changed or revoked, so avoid recording private conversations without permission (listening, uploads, and privacy).
- Start here
- Pick a species, zoom out along its branches, and use a guided tour or the polytomy view to see where relationships remain unresolved.
- Why open it
- OneZoom makes evolutionary relationships explorable as a zoomable tree: leaves stand for species and branches show their relationships (introduction and use guide).
- Keep in mind
- This is a versioned reference visualization, not a live wildlife feed or a claim of complete current biodiversity. Some relationships are unresolved; alternate views may guess a branching order and mark uncertain branches more lightly (introduction).
03 / 03 · Three doors
small superpowers
Three browser tools with one clear job apiece—and limits worth knowing before you drop in a file or send a query.
- Start here
- Drop in a GeoJSON or Shapefile, try simplifying or clipping it, then export the result.
- Why open it
- It brings practical GIS operations—simplify, clip, dissolve, filter, and edit attributes—into a focused web app that handles many common map-data formats (web-app documentation).
- Keep in mind
- Files stay in the browser, but Mapshaper discloses analytics and Mapbox requests when basemap tiles are used; its optional AI feature also makes network requests. Very large files—hundreds of megabytes—can exhaust browser memory (privacy in the web-app docs; privacy policy).
- Start here
- Drop or paste one image, compare the original with a compressed version, adjust codec settings, and save the result.
- Keep in mind
- Squoosh says image processing runs locally and image files are not sent to a server, but its repository discloses analytics that include basic visitor data and before/after image sizes. The reviewed sources state no official file-size cap or batch guarantee, so performance depends on your browser and device (privacy statement).
- Start here
- Use the Wizard to build a focused query for a feature in the current map area, run it, inspect the results, and export GeoJSON or raw OSM data.
- Keep in mind
- Queries go to a shared Overpass API; public instances throttle heavy or repeated work, and the API uses the client’s network address for quota accounting, so avoid sensitive search terms or locations. GeoJSON is not lossless for every OSM object; use raw output when fuller structure matters, and follow OSM’s ODbL attribution terms (API capacity and limits; GeoJSON limits; OSM copyright and license).
A note for the way back
The richest finds are not only impressive screens; they teach a browsing habit. Follow the image back to its book, the map line back to its timestamp and data layer, and the compressed file back to the choices that shaped it. A little provenance—source, date, rights, and limits—lets curiosity travel without mistaking a vivid display for a complete or timeless account.