Remember, Paris wasn’t “always this way.” It wasn’t even this way in 2019 just before the Pandemic. Just a few years ago, #Paris was choking in car traffic much more. This is new. This is leadership. Cities are a result of choices. HT @Khayat_Fouad

China again doubled down on solar in the first half of 2025, adding in 6 months more than America has built in its entire history. They're literally growing at a rate of 2 United States a year. Which raises an interesting question for the many people out there who, like Trump,

People spend an inordinate amount of time complaning about traffic, blaming everything from cycle lanes to roadworks, yet ignore their own decision to drive. Rather than waiting for things to improve, be brave and take the decision yourself - be part of the solution.🚴‍♀️🚶‍♂️🚍

Portugal shut down their last remaining coal fired power plant and is fostering a renewable energy revolution. They could be completely renewable by 2040 if not sooner. It can be done. We have the solutions. Implement them. #ActOnClimate #climate #energy #renewables #go100re

“The rise in high-fronted SUVs poses a clear and growing threat to public safety, especially for children. With no benefit to society, it’s time for lawmakers to act.” Via @carltonreid in @Forbes. Cap SUV/truck hood heights. And ban unsafe designs. https://t.co/2JZrXIKdYk

Make it easy to ride bikes around town and people will ride bikes around town. Bike traffic in Paris:

Good to see this article from Sadiq Khan, Mayor of London, on how all the evidence is that 20mph limits make London a better place to be for its residents, visitors and tourists. Its time to say #20splenty for us all. https://t.co/nDfimmsK90

Imagine finding out YOUR parents ignored this & just carried on as normal…

Not a single person died on Helsinki’s roads in the last year. An impressive achievement which shows cities across the world that road traffic deaths are not inevitable. https://t.co/Ut5mNV3x6v Helsinki records zero traffic deaths for full year - Helsinki Times

Our civilisation, slamming into a wall.

Solar’s price drop is astonishing: panels are now 98% cheaper than when I first analysed the cost of solar in 2004. Today, building a fence with solar panels can be cheaper than using wood.

I am wondering which is better: stripes or the graph, or maybe both together.

“Owning a car does not give you the right to take up public space.” When Pontevedra Mayor Miguel Lores was elected on a car-free platform in 1999, he wasted no time. The city was in severe decline, with pollution, health, safety, and livability all trending the wrong direction.🧵

The Greenland ice cap is losing around 30 MILLION tonnes of ice an hour due to the climate crisis - 20% MORE than what scientists originally thought. No time to waste. Stopfossifuels. #ActOnClimate #climate #energy #renewables #go100re

Paris pollution after they added bike lanes and restricted cars

Great piece in today's NYTimes on the recent acceleration of global warming (and its impacts), featuring comments from Kate Marvel, Daniel Swain, Cecilia Bitz, and me: https://t.co/ovZbXTecss

France and Spain are dealing with an extreme heat wave, with temperatures soaring to 40 °C plus in many regions. Climate change makes these heatwave events up to 10x more likely. This is not normal, this is not "summer" - the global thermostat is being turned up rapidly.

#Spain and #Portugal's southern regions are expected to face an unbearable heatwave this coming weekend, with the heat index potentially exceeding 50°C (122°F) in some areas. #Climate change threatens to push these already arid areas into desertification. #ClimateCrisis

'It's hard to design a space that will not attract people. What is remarkable is how often this has been accomplished.' — William H. Whyte A recent measurement in Amsterdam showed that tarmac for cars⚫️ adds around 13°C compared to green spaces🟢.

🚦 One year after Amsterdam reduced speed limits to 30 km/h on 500 streets. 🤕 injury-related crashes dropped 11%, 🚗 single-vehicle accidents fell 18%. 📈 support rose to more than 60% Let's unpack: #Amsterdam #30kmh #TrafficSafety