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How Reefvive is rebuilding coral reefs from discarded oyster shells

Close-up view of many empty oyster shells scattered across a surface, forming a pale, textured layer.

September 23, 2026 in Circularity

BY THE OPTIMIST DAILY EDITORIAL TEAM Most artificial reef structures are built from concrete. Concrete is smooth, and smooth surfaces give young coral little ...Read More

Pomegranates and berries produce a gut metabolite that may improve IBD outcomes

Fresh fruit display with pomegranate halves, a bowl of dark purple tomatoes, and a mix of strawberries, raspberries, and blueberries on a gray surface.

September 23, 2026 in Evergreen

BY THE OPTIMIST DAILY EDITORIAL TEAM Gut bacteria that break down compounds in pomegranates, walnuts, and berries produce a metabolite called urolithin A. New ...Read More

From fire starters to compost: what to do with dryer lint

Hand holding a lint filter tray with gray lint near the door of a front-loading washing machine.

September 22, 2026 in Evergreen

BY THE OPTIMIST DAILY EDITORIAL TEAM If you clean your dryer’s lint trap after every load, you end up with a soft little cloud ...Read More

Mexico’s desert ecosystem is healing months after bison reintroduction

Bison grazing in a grassy plain; several adults with shaggy brown coats and curved horns.

September 22, 2026 in Climate Action

BY THE OPTIMIST DAILY EDITORIAL TEAM The 200-year absence of bison from Mexico’s Chihuahuan Desert left a gap that most people stopped noticing. Grass ...Read More

Can dogs sniff out cancer? New AI study shows promise

Beagle puppy wearing a red collar being gently held and petted by two people, face close to the camera.

September 21, 2026 in Artificial Intelligence

BY THE OPTIMIST DAILY EDITORIAL TEAM A company in India is reporting more than 90 percent accuracy in detecting seven types of cancer from ...Read More