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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...
France finally votes to strike the Code Noir from its books, its last slavery law
BY THE OPTIMIST DAILY EDITORIAL TEAM There is something disquieting about the idea that a law governing slavery could still exist on the books in 2026. Not as an enforced law. Not as a policy. Just sitting there, formally unrepealed, in the archive of French legal history. That was the status Read More...
Breast cancer genomic test could spare millions from chemotherapy
BY THE OPTIMIST DAILY EDITORIAL TEAM For decades, high clinical risk and chemotherapy arrived together as a package deal in early breast cancer. A trial presented at the American Society of Clinical Oncology meeting in Chicago on May 30, 2026, is pulling them apart. The OPTIMA trial enrolled Read More...
How parents' phone habits shape their children's, according to new research
BY THE OPTIMIST DAILY EDITORIAL TEAM For years, the conversation about children and screens has been aimed squarely at children. How much time, what content, and at what age? Sweden's public health agency has now turned the question around. This past Monday, the agency issued new guidelines 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...
A daily pill just doubled survival time for advanced pancreatic cancer
BY THE OPTIMIST DAILY EDITORIAL TEAM In a 500-patient trial at American Society of Clinical Oncology's (ASCO) annual meeting in Chicago, a daily pill called daraxonrasib doubled average survival time in patients with advanced pancreatic cancer. Those on the drug lived for an average of 13.2 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...