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Athens' former airport is becoming Europe's largest coastal urban park
BY THE OPTIMIST DAILY EDITORIAL TEAM Two million square meters of former airport land in the southern suburbs of Athens are being converted into The Ellinikon Park. The park is designed to actively lower surrounding air temperatures, process 100 percent of its own rainfall on site, and keep more Read More...
Podcast Transcript September 25th, 2026— The tilcayo, cancer-sniffing dogs, and 8 more things going right
Episode Description: There’s a startup training dogs to detect cancer across seven types… and there’s over 90 percent accuracy across six hospitals. This week Arielle and Karissa also cover a wildcat species science just got around to naming (local communities already had a name for Read More...
Ethiopia's Green Legacy Initiative is turning citizens into foresters
BY THE OPTIMIST DAILY EDITORIAL TEAM For most of the past century, Ethiopia was losing its forests. From the turn of the millennium to 2025, the country shed 560,000 hectares, about 2,160 square miles, of tree cover to agriculture, logging, and charcoal fuel. Then the government launched the Read More...
How book clubs and bedtime stories protect and build healthier brains
BY THE OPTIMIST DAILY EDITORIAL TEAM If the book on your nightstand has been gathering dust, here's your reason to finally open it. A new review from Cambridge University researchers finds that reading for pleasure, whether that's a worn paperback or the latest romantasy on your e-reader, is Read More...
From 2.6% to 97%: how South Korea eliminated food waste and what NYC can learn
BY THE OPTIMIST DAILY EDITORIAL TEAM In Yeouido, Seoul, Seunghwan Hong spends less than a minute dropping off his food scraps. He taps a card, the lid opens, and the bin logs the weight. Whatever he throws in, he pays for. South Korea's food waste recycling rate was 2.6 percent in 1996. In Read More...
The tilcayo: new wildcat species discovered in Bolivia's cloud forest
BY THE OPTIMIST DAILY EDITORIAL TEAM For years, biologists cataloguing Bolivia's Yungas cloud forest would note a small spotted cat and move on. Tiger cat, broadly speaking. The general profile fit and there was no obvious reason to dig further. Local communities had always called it Read More...
How Reefvive is rebuilding coral reefs from discarded oyster shells
BY THE OPTIMIST DAILY EDITORIAL TEAM Most artificial reef structures are built from concrete. Concrete is smooth, and smooth surfaces give young coral little to grip. A team of students at National Taiwan Normal University built their version from something else entirely: ground oyster shells Read More...
Pomegranates and berries produce a gut metabolite that may improve IBD outcomes
BY THE OPTIMIST DAILY EDITORIAL TEAM Gut bacteria that break down compounds in pomegranates, walnuts, and berries produce a metabolite called urolithin A. New research from the University of Louisville shows this compound can activate a protective pathway in intestinal cells that repairs the gut Read More...
From fire starters to compost: what to do with dryer lint
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 of fiber in your hand pretty regularly. Most people drop it straight in the trash, and that is fair. But if you get in the habit of saving it in a sealed bag instead, Read More...
Mexico's desert ecosystem is healing months after bison reintroduction
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 accumulated unchecked, soil compacted, fire risk crept upward. Wildlife that depended on the cascade effects of bison grazing gradually Read More...