I've updated the World Population Density map with the new GHSL 2023. It's a big improvement, with higher resolution and more accurate mapping of density and settlement patterns across the globe- https://t.co/1khGKcFxih

WUP 2025 has some big changes, including a new harmonised methodology for defining city populations based on the Global Human Settlement Layer, as well as new projections of city populations to 2050. Find out more here-

Is Tokyo no longer the world's largest city? According to the new World Urbanization Prospects 2025 data, Jakarta is the world's biggest agglomeration with 42 million people. I've mapped WUP 2025 here-

These measures are weighted by centrality, so the roads that cyclists want to use to reach typical destinations count for more than infrequently used routes. See working paper. This research is part of the ENHANCE project- https://t.co/Of3VTUCyra

In the overall combined score, Hackney, Islington, Hammersmith & Lewisham are the best Inner boroughs; and Waltham Forest, Richmond and Haringey are the best Outer. Kensington is the worst Inner borough, while there are lots of car-dependent poorly performing Outer boroughs-

The second perspective is Level of Traffic Stress, which measures general road conditions for cycling such as speed limits and road type. Low speed Inner London boroughs with Low Traffic Neighbourhoods and similar infrastructure do best here, such as Hackney and Islington-

We combine two perspectives on cycle networks. The first is infrastructure, measuring the presence and quality of cycle lanes, with priority to physically segregated lanes. Outer London boroughs that have invested in cycling do well in this measure (Waltham Forest, Richmond)-

Which London boroughs are the best for cycling? We’ve been working on new open data indicators of cycle network quality- https://t.co/onVnGQjk1C

Communities are self-organising increasingly to run their own local services. But why do some so-called ‘DIY urbanism’ projects survive and others fail? New open access publication by @zulfikardwp & @MTJProf now published in Cities https://t.co/NGHYVbOXuD

Announcing a forthcoming book, “Regions in Evolution - A History of Regional Planning”, a critical and deep analytical look at the ebbs & flows of regional planning globally over 100 years, with John Harrison & Daniel Galland, due to be published early in 2026

Energy in Britain has gotten scarce—and thus expensive. Prices are high in absolute terms, and further above the European average than any point in at least 40 years (barring the 22/23 shock). What's behind this, and is it crimping growth? I took a look for @TheEconomist. (🧵)

Bits #4K Review – @BillHuntBits checks out Peter Weir’s thrilling naval epic MASTER AND COMMANDER: THE FAR SIDE OF THE WORLD (2002) in #UltraHD Steelbook from @20thcentury via Sony Pictures Home Entertainment! @TheDigitalBits https://t.co/QwidxXAHIP

Hiring: Research Fellow in GeoAI for Urban Mobility @ CASA, UCL Work on synthetic human mobility data, deep learning & privacy-preserving AI. 📅 close on 11th August | interview in August | Start ASAP Apply 👉 https://t.co/A8pBxT6Qqq #GeoAI #UrbanMobility #UCLJobs #Hiring

📉 Spring 2025 saw the lowest seasonal river flow across Europe since #EFAS records began in 1992. This new map, featured in the May #C3S Climate Bulletin, highlights widespread below-average flows in central, eastern & northern Europe. More details: https://t.co/8JuYRwaPSk

Thrilled my new PhD paper is out in Transportation Research Part D! 🎉 We explored "Spatial heterogeneity in human mobility responses to London's ultra-low emission zone expansion". Read the open-access paper: https://t.co/JuWHIKkT1o

All right, here’s another review I’ve waited years to write: My in-depth look at Ridley Scott’s epic KINGDOM OF HEAVEN: DIRECTOR’S CUT (2005) in 3-disc 4K Ultra HD Steelbook from @20thcentury via Sony Pictures Home Entertainment! It’s FANTASTIC. @thedigitalbits

💥London bucks national trends as cycling boom continues💥 New City of London data shows biggest increase cycling since records began: 📈cycling up 57% since 2022 🚲🚲nearly 2x more bikes than cars 📈500% increase in cycling since 1999 https://t.co/WKxYAWgjBs

VACANCY: CASA is seeking a part-time Research Fellow/Research Assistant in GeoAI to join the PHOTO–ERC-funded Proof of Concept project, which aims to develop a prototype human mobility trajectory data generator. Deadline: 14 May 2025 Apply here:

Only one day left to apply for this #PhD ! 🚏🚌 #phdlife #PhDposition #transit #urban

Plus! An exquisite ghost story from a Japanese master, a defining work of 1990s cinema, and one of the funniest, most beloved films of all time—now on 4K!

Join the CASA team! We're recruiting a part-time, early career research assistant to work on an EPSRC Impact Acceleration Account award-funded project, investigating the decline in West Midlands fire & rescue services. Read more & apply by 10 December: https://t.co/yUWCPgGIY4