Sustainable Urban Development
With cities expected to host about 70 percent of the world's population, sustainable urban development is key to making communities worldwide more resilient against the growing threat of climate change. Find out about the latest urban practices from across the world aiming to make our cities more sustainable and inclusive in these good-news stories from The Optimist Daily.
How reflective roof paint is cooling homes across Africa
BY THE OPTIMIST DAILY EDITORIAL TEAM The question seemed reasonable enough: what heat adaptation interventions were already working in Africa’s low-income communities? Lara Dugas, an epidemiologist, and climate scientist Mark New had received funding from the Wellcome Trust’s HeatNexus Read More...
11,000 jobs, $1.4 billion in savings: what a decade of green banking built in Philadelphia
BY THE OPTIMIST DAILY EDITORIAL TEAM An impressive $14.7 million from the city. $1.3 billion in economic investment returned. $1.4 billion in energy savings. 11,000 jobs created. Those are the results of the Philadelphia Energy Campaign’s first decade, according to a 10-year economic impact Read More...
Dinner scraps are rebuilding California’s lost oyster reefs
BY THE OPTIMIST DAILY EDITORIAL TEAM What if scraps from a dinner could become a habitat? That's the basic premise of the Shells for Shorelines program in a meaningful sense: the shells of oysters eaten at restaurants in Orange County can become the foundation on which new oysters settle and Read More...
WasteBar turns cigarette butt waste into food currency in the Netherlands
BY THE OPTIMIST DAILY EDITORIAL TEAM There is a small mobile cart somewhere in the Netherlands right now, and if you bring it a handful of cigarette butts, it will give you poffertjes. Those are Dutch mini pancakes, in case you were wondering, and yes, the exchange is real. WasteBar is the Read More...
Monterey Park becomes first US city to permanently ban data centers
BY THE OPTIMIST DAILY EDITORIAL TEAM Monterey Park voted 86 percent to 14 percent last Tuesday to permanently ban data centers from the city. It is the first US city to do it through a ballot initiative. Campaign organizer Steven Kung called it “a landslide victory.” On the reasons: Read More...
The urban cooling gap: why planting design matters as much as canopy count
BY THE OPTIMIST DAILY EDITORIAL TEAM Street trees reduce urban heat. That much is established. What’s less settled is whether they’re enough on their own, or whether the way a city plants matters as much as how much it plants. New field research from Melbourne, Munich, and Hong Kong, led Read More...
How PFAS regulation cut toxic chemical levels in Canadian wildlife
BY THE OPTIMIST DAILY EDITORIAL TEAM Levels of some of the most toxic PFAS compounds have fallen sharply in Canadian seabird eggs, and the reason isn’t complicated. Regulation worked. A peer-reviewed study tracked PFAS concentrations in the eggs of northern gannets on Bonaventure Island, in Read More...
Earth Prize 2026 part I: teenage teams tackling big global problems
BY THE OPTIMIST DAILY EDITORIAL TEAM Every year, The Earth Prize asks teenagers across the world the same question: what environmental problem would you solve, and how? Every year, the answers come from young people who live closest to the problem. After five years and more than 21,000 students Read More...
Earth Prize 2026 part II: seaweed fabric, hornbill nests, and a healing bandage
BY THE OPTIMIST DAILY EDITORIAL TEAM This is part two of our Earth Prize 2026 coverage. Part one covered four regional winners from Ireland, Kenya, Gaza, and India, including Tala and Farah Mousa, whose Build Hope Palestine project we first wrote about earlier this month. Here are the remaining Read More...
Is No Mow May helping bees or just overgrown hype? Here’s what the experts say
BY THE OPTIMIST DAILY EDITORIAL TEAM Letting your lawn grow wild in May to help bees and other pollinators? That’s the pitch behind No Mow May, a conservation campaign that has bloomed on social media and in neighborhoods across North America. The idea is simple: stop mowing for one month so Read More...