Cities

This archive collects milestone stories where cities are the driving force behind positive change. From urban planning breakthroughs to local policy wins, these stories highlight how municipal governments, city agencies, and urban communities around the world are solving real problems.

New York City skyline at dusk for an article about Zohran Mamdani mayor historic milestone

Zohran Mamdani becomes New York City’s first Muslim and first Asian American mayor

By / / Good News For Humankind

Zohran Mamdani mayor: In January 2026, Zohran Kwame Mamdani was sworn in as the 112th mayor of New York City, becoming the first Muslim and first Asian American to hold the office in the city’s nearly 400-year history. He defeated former governor Andrew Cuomo in a striking Democratic primary upset, building a multiethnic, working-class coalition across all five boroughs. His platform centered on concrete affordability measures including fare-free buses, city-owned grocery stores, universal child care, and a rent freeze for roughly one million stabilized households. The win signals that grassroots coalition-building around kitchen-table economics can outperform institutional money and name recognition.

Kayakers paddling the calm urban waters of the Chicago River for an article about the Chicago River open-water swim

Chicago River will host its first open-water swim in nearly a century

By / / Good News For Humankind

For the first time in nearly 100 years, swimmers are set to enter the Chicago River in downtown Chicago, marking a milestone in one of America’s most remarkable urban environmental recoveries. A Long Swim is organizing the historic event as both a celebration of decades of cleanup efforts and a fundraiser for youth swim education in underrepresented communities. Sustained investment in policy, infrastructure, and civic organizing has transformed a once-toxic waterway into a recovering ecosystem now home to fish, turtles, beavers, and the famous snapping turtle Chonkosaurus. Chicago’s turnaround is being watched as a model for degraded urban rivers worldwide.

Plastic waste floating in a Lagos canal for an article about the Lagos plastics ban — 12 words.

Lagos bans single-use plastics in one of Africa’s most polluted cities

By / / Good News For Humankind

Lagos plastics ban took effect July 1, 2025, prohibiting styrofoam containers, plastic cutlery, plates, and straws across Nigeria’s commercial capital of 15 million people. The city generates at least 13,000 tons of waste daily, with plastic clogging canals and worsening seasonal flooding in low-income neighborhoods. The ban builds on a 2024 federal policy targeting similar items, signaling coordinated national momentum. What makes this significant is that it carries real enforcement consequences — including business closure for repeat violators — setting it apart from environmental pledges with no teeth.

A quiet Helsinki street with a bike lane and pedestrian crosswalk for an article about zero traffic deaths

Helsinki completes a full year with zero traffic deaths

By / / Good News For Humankind

Helsinki’s zero traffic deaths milestone after 12 consecutive fatality-free months represents one of the most significant urban road safety achievements on record. The Finnish capital, home to nearly 700,000 people, has recorded no traffic fatalities since July 2024, the result of three decades of systematic infrastructure redesign, speed limit reductions, and Vision Zero planning. Lower speed limits, raised crosswalks, automated enforcement, and exceptional public transit have combined to dramatically reduce both deaths and injuries. Helsinki proves that zero is not an accident but a policy choice sustained over time.

A worker replacing a corroded lead pipe in a residential street for an article about Flint lead pipe replacement, for article on lead pipe removal

Flint replaces lead pipes a decade after water crisis exposed a city to poison

By / / Good News For Humankind

Flint lead pipe replacement is complete, with Michigan officials confirming in a court filing that all 11,000 lead service lines have been replaced and more than 28,000 properties restored — fulfilling a core requirement of the city’s 26 million legal settlement. The milestone arrives more than a decade after state-appointed managers switched Flint’s water source in 2014, exposing nearly 100,000 residents to toxic lead. For a majority-Black city that spent years being dismissed by officials, the achievement reflects both relentless community organizing and hard-fought legal accountability. Flint’s struggle directly shaped federal lead pipe policy now affecting cities nationwide.

Solar farm in the desert, for article on Abu Dhabi largest solar plant

Abu Dhabi to build world’s largest solar energy project

By / / Good News For Humankind

Abu Dhabi’s new solar plant will run 24 hours a day, delivering up to 1 gigawatt of steady baseload power even after sundown — something no solar facility has done before at this scale. The secret is a massive 19-gigawatt-hour battery system that soaks up sunshine during the day and releases it through the night and on cloudy days. Once it comes online in 2027, the $6 billion project is expected to power roughly 750,000 homes and dwarf the current record holder, a 3.5-gigawatt plant in China. The bigger story is what it proves: solar can behave like a reliable, always-on power station, reshaping how grid operators everywhere think about renewable energy.

New York, for article on NYC offshore wind farm

New York City to get a $3 billion, 80,000-acre offshore wind farm

By / / Good News For Humankind

Offshore wind is coming to New York City for the first time, with Empire Wind 1 set to power roughly half a million residents by 2027. Developed by Equinor and backed by a $3 billion financing package, the 810 MW project will be the first to plug directly into the city’s grid — covering about 6% of NYC’s electricity needs. Construction will run through a redeveloped South Brooklyn Marine Terminal, creating more than 1,000 union jobs along the waterfront. It’s not a silver bullet, but it’s a working proof of concept: the largest U.S. city now has a real, physical link to clean ocean wind, and a template other coastal cities can follow.

The Hague waterfront and buildings, for article on fossil fuel ad ban

The Hague becomes world’s first city to pass law banning fossil fuel-related ads

By / / Good News For Humankind

The Hague has just become the first city in the world to legally ban fossil fuel advertising, prohibiting promotions for petrol, diesel, aviation, and cruise ships across billboards, bus shelters, and other outdoor spaces starting in 2025. The ordinance took two years to pass and arrived only after voluntary agreements collapsed, with ad operators simply refusing to comply. Researchers compare it to tobacco advertising bans: the point isn’t just to stop one billboard, but to chip away at the sense that high-carbon choices are the normal default. Cities like Toronto, Graz, and Amsterdam have been waiting for someone to go first, and now they have a working legal template. It’s a small but meaningful reminder that cities don’t have to wait for national governments to start reshaping the climate conversation.

The beach with vegetation in foreground, for article on legal rights for ocean waves

In a first, the Brazilian city of Linhares grants legal rights to waves

By / / Good News For Humankind

Legal rights for ocean waves are now real: in August 2024, the Brazilian city of Linhares became the first government anywhere to extend legal personhood to part of the ocean, recognizing the waves at the mouth of the Doce River as rights-bearing. The waves had been smothered for seven years by mining sludge from a 2015 dam collapse, until a 2022 flood unexpectedly washed the river mouth clean. Rather than wait for the next disaster, the community wrote protection into law, requiring the city to actively defend the river’s flow and the waters it feeds. It’s a small, precise win with big implications — a hint of how coastal communities everywhere might begin defending the ecosystems they love on the ecosystems’ own terms.

Helsinki, for article on air-to-water heat pump

World’s largest air-to-water heat pump to warm 30,000 homes in Finland

By / / Good News For Humankind

Helsinki’s new heat pump can warm 30,000 homes on renewable electricity alone, even when winter temperatures drop to -4°F. Built by MAN Energy Solutions for Finnish utility Helen Oy, it’s the largest air-to-water heat pump in the world, and it uses carbon dioxide as its refrigerant instead of the harmful gases most pumps rely on. Once it switches on for the 2026–2027 heating season, it’s expected to cut around 26,000 tonnes of CO2 each year compared to fossil-fueled heating. Cold cities everywhere have been waiting for proof that district heating can go fully renewable without sacrificing reliability through deep winters. If Helsinki’s machine delivers, it offers a blueprint Scandinavia, Central Europe, and beyond can actually follow.