Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Creating scalable and cost-effective smart windows that modulate solar radiation has long been a challenge. A simple electrochromic organogel can effectively tune solar radiation entering indoor space through the dynamic aggregation of polyoxometalate clusters, enabling large-area, low-cost glazing for energy-efficient buildings and vehicles.
Ubiquitous mobility data from traffic cameras and mobile phones enable large-scale, fine-grained, near-real-time estimation of traffic emissions. Our analysis reveals systematic biases in conventional urban emission inventories and shows that Manhattan’s congestion pricing programme led to a 16–22% reduction in traffic emissions in the 8 weeks after its implementation.
