How Paris uses the Seine to cool thousands of buildings without AC
BY THE OPTIMIST DAILY EDITORIAL TEAM Every air conditioner does the same thing: pull heat from inside a building and dump it outside. On a hot day, millions of units doing that together push street temperatures up, which makes the next hot day worse. “Everything that requires energy releases Read More...
Greece launches nanosatellite system to catch wildfires early
BY THE OPTIMIST DAILY EDITORIAL TEAM Conventional satellites can’t detect a wildfire until it’s roughly the size of a cruise ship. Greece just launched four that catch them when they’re four meters (about 13 feet) across. The four OroraTech nanosatellites, each smaller than a carry-on Read More...
Europe removed a record 602 river barriers last year
BY THE OPTIMIST DAILY EDITORIAL TEAM A dam fell in Iceland last December, the first the country has ever deliberately dismantled. The structure on the River Melsá had long since stopped generating power. Sheep were living in the old powerhouse. “It wasn’t providing any electricity,” said 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...
Julie and Kariba: two elephants getting a second chance in Portugal
BY THE OPTIMIST DAILY EDITORIAL TEAM Kariba has lived alone in a Belgian zoo for years. Julie has been with the Cardinali circus in Portugal since 1988, when she was caught in the wild and sold to a German zoo before the family acquired her. Both are African elephants in their 40s. And both are Read More...
Polish court finally ends registry refusals for same-sex EU marriages
BY THE OPTIMIST DAILY EDITORIAL TEAM For years, Polish same-sex couples who married in Germany, France, or Spain came home to a familiar dead end. Poland's domestic law defines marriage as between a man and a woman; Parliament had not acted on civil unions, and local registry offices turned away Read More...
Europe may launch plan requiring solar panels on all public buildings by 2025
Countries are speeding up efforts to transition to 100 percent renewable energy sources, not just for the sake of the climate, but also to build independence from Russian petroleum. Germany accelerated its own schedule to become 100 percent renewable, seeing the danger to its energy sector that Read More...
Europe’s largest floating solar park to open in Portugal this summer
Last month we wrote about Greece unveiling Europe’s largest double-sided solar farm. Now another European country is about to claim a significant achievement in the race towards renewables: building the continent’s largest floating solar park. The solar park will be located in Portugal’s Read More...
How to help Ukrainian refugees in Moldova
Since it began on the 24th of February, the war in Ukraine has forced millions of people to leave their homes. According to the UNHCR, more than 3 million people have already fled, and many more are expected to leave as the situation escalates. A great number of these people have sought refuge in Read More...