Solution Spotlight: Turning garden waste into a carbon sink in Stockholm

In the fight against climate change, Stockholm is looking to an unusual place: fallen tree branches and other garden waste from

A Mayors Challenge like no other

For the world’s mayors, these are uniquely challenging times. James Anderson, head of Government Innovation programs at Bloomberg Philanthropies, explains how this year’s Mayors Challenge is responding.

Infographic: The Mayors Challenge, by the numbers

Ever since its launch in 2013, the Bloomberg Philanthropies Mayors Challenge has empowered city leaders from around the world to tackle their most pressing concerns.

The Mayors Challenge—and the skills-building that comes with participating

The Mayors Challenge isn’t just a competition about big ideas. It’s also a process that helps cities build their innovation muscles.

Mayors Challenge impact: A look back at previous winners

Here's how past winners of a one-of-a-kind ideas competition addressed their toughest challenges—and the impact they were able to create as a result.

Helping city solutions spread: How we think about ‘replication’ at Bloomberg Philanthropies

Inside the foundation's thinking about how best to spread solutions to big urban challenges from one city to another.

Mientras la Amazonia se incendia, São Paulo impulsa la agricultura sostenible

En la última edición de nuestra serie de verano con los ganadores y finalistas del 2016 Mayors Challenge en América Latina, Bloomberg Cities visita São Paulo,

Inspired by Stockholm’s success, a U.S. city goes big on biochar

Biochar is nothing new in Minneapolis.

Paraguay’s capital city takes the first steps toward counting — and including — its residents

In the latest of our summer-long series checking in with the Latin American winners

Pivoting with purpose: How to change course and keep innovating

We’ve heard it s