Today’s Solutions: December 21, 2025

Whatever you think of them, you can’t say the new promises from Paris’s Mayor Anne Hidalgo lack ambition.

Seeking re-election at the municipal polls in March, Hidalgo unveiled proposals this week that include a referendum on the role of Airbnb, a plan to make the city center “100 percent bicycle,” a new 5,000-strong municipal police force in which at least half the staff are women, and a vow to spend 20 billion euros on converting office buildings into affordable housing.

By international standards, these are bold proposals. Other European cities may already be on the road to going further in similar policy areas: Madrid has already banned cars from its inner-city, Barcelona has hit Airbnb with a fine of €600,000 for breaking local home-share rule infractions, and Berlin has approved a citywide five-year rent freeze.

No other city is as yet going quite as hard as Paris, however, in trying to tackle pollution, congestion, and housing access and affordability simultaneously. But what’s particularly striking about Paris’ current politics, however, is not that these measures are being proposed, but that many of Hidalgo’s main political opponents are proposing something similar.

Hidalgo’s progressive politics have made sustainability the standard, which speaks volumes to the power of standing up and pushing for more ambitious climate targets.

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