This photo taken in Nagahama, Shiga Prefecture, in April 2026 shows a newly developed fireworks outer shell incorporating water-soluble resin. (Kyodo) OTSU, Japan (Kyodo) -- A Japanese fireworks ...

OTSU, Japan - A Japanese fireworks manufacturer and a university professor have jointly developed more environmentally friendly fireworks with water-soluble shell casings that naturally dissolve after ...

NAGAHAMA, Shiga -- A fireworks manufacturer in this western Japan city has spent about eight years jointly developing fireworks with outer shells that dissolve quickly in water and return to nature, ...

A fireworks ball consists of gunpowder layers inside the outer shell, which shatters upon explosion and falls to the ground. While debris from conventional casings, typically made of kraft paper, ...