GravityLight: lighting for a billion people
Why the open web links it
Demonstrates a low-cost, sustainable lighting solution using gravity to generate light without batteries or fuel.
Linked by 5 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including sapo.pt, bnext.com.tw, fridayfunstuff.com, neudoff.net, org.ro.