Today’s Solutions: December 18, 2025

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.

Scotland’s largest commu

Scotland's largest community solar farm moves forward on the Isle of Arran

BY THE OPTIMIST DAILY EDITORIAL TEAM A brighter, community-powered future is on the horizon for the Isle of Arran in Scotland. Plans for what will become the country’s largest entirely community-owned solar farm are officially moving ahead, with the Glenkiln solar project recently securing Read More...

Remembering Pope Francis and h

Remembering Pope Francis and his profound impact on climate action

BY THE OPTIMIST DAILY EDITORIAL TEAM The recent passing of Pope Francis has sparked reflection on his remarkable leadership — not only within the Catholic Church, but also across the global climate movement. Known for his humility, compassion, and commitment to justice, Pope Francis Read More...

Paris curbed cars—and cleare

Paris curbed cars—and cleared the air: what 20 years of bold green policy achieved

BY THE OPTIMIST DAILY EDITORIAL TEAM Paris spent the last two decades reimagining its urban landscape, and the results are not just visible, but breathable. The French capital has replaced car-centric streets with bike lanes and pedestrian zones, added green spaces, and eliminated more than Read More...

New York City begins enforcing

New York City begins enforcing mandatory composting to cut waste and emissions

BY THE OPTIMIST DAILY EDITORIAL TEAM New York City officially launched enforcement of its mandatory composting program, making compost separation a requirement for all residents as of April. The city’s goal: reduce landfill waste and curb greenhouse gas emissions by diverting organic matter Read More...

Dublin expands car-free zones

Dublin expands car-free zones to improve bus travel and city life

BY THE OPTIMIST DAILY EDITORIAL TEAM Dublin is taking further steps to reduce private car traffic in its city centre, with new restrictions set to take effect this summer as part of the next phase of the Dublin City Transport Plan. Following the success of last August’s initial Read More...

Splitting seawater could revol

Splitting seawater could revolutionize cement into a carbon-negative material

BY THE OPTIMIST DAILY EDITORIAL TEAM In the race to tackle climate change, cement has long been a stubborn problem. Responsible for about eight percent of global carbon dioxide emissions, it’s the fourth-largest source of CO2 pollution worldwide. But a team of researchers believes a new, Read More...

California’s first wildf

California's first wildfire-resilient neighborhood in Escondido

BY THE OPTIMIST DAILY EDITORIAL TEAM In response to California's escalating wildfire threat, homebuilder KB Home has launched what it calls the first "wildfire-resilient" housing development in the state. Located in Escondido, just outside San Diego, the new community is designed to meet Read More...

Finland races ahead in clean e

Finland races ahead in clean energy: coal phase-out arrives four years early

BY THE OPTIMIST DAILY EDITORIAL TEAM In a remarkable step toward a fossil-free future, Finland effectively phased out coal as a source of electricity generation—four years ahead of its 2029 target. The closure of the Salmisaari coal plant in Helsinki on April 1 marks the latest and most Read More...

California leads the way as EV

California leads the way as EV charging ports outnumber gas nozzles

BY THE OPTIMIST DAILY EDITORIAL TEAM California achieved a significant milestone in its transition to electric vehicles (EVs). As of 2024, the Golden State already had 178,500 electric vehicle charging ports—outnumbering the state's estimated 120,000 gas nozzles. This shift marks a critical Read More...

Paris votes to pedestrianize 5

Paris votes to pedestrianize 500 more streets in push for greener city

BY THE OPTIMIST DAILY EDITORIAL TEAM In a resounding show of support for a greener, more walkable city, Parisians voted to pedestrianize an additional 500 streets across the capital. The March 23 referendum marks another milestone in Paris’s broader campaign to curb car use and improve urban Read More...