Mayors Challenge: Announcing this year’s 50 Champion Cities Chelsea CollierJune 15, 2021Bloomberg, mayor
European cities aim for new heights in digital innovation Chelsea CollierJune 3, 2021Europe, Bloomberg
9 Ways cities can use data for results Chelsea CollierJuly 19, 2019Bloomberg, data, What Works Cities
Data Is Just the Beginning: It’s about Better Serving Residents Chelsea CollierApril 14, 2019Bloomberg, What Works Cities