The congestion charge has helped to ease traffic and raise funds. But the rise of Uber and other private hire vehicles have raised unforeseen challenges.
Free public transport could be one way to get more people to ditch the car.
Hydroponics and aquaponics are already being used by the agriculture industry – is it time urban farmers got on board?
Buses are set to be replaced by private and autonomous vehicles – but it's not clear how society is going to deal with it.
There are 20 US cities bidding to host Amazon's HQ2 – but the winner will have its work cut out to make the most of the prize.
It's time to shatter some common misconceptions about the recent crime wave.
Stabbing deaths among young people are at an eight-year high – and the government is not doing anything effective to solve it.
Growing numbers of people are using food banks to feed themselves and their families. But many areas where residents face a high risk of food poverty are under-serviced.
Understanding population density takes more than just arithmetic – that's where mapping can help reveal which countries and cities are really getting cramped.
Ventilation and natural light are two simple measures which can make buildings better for people to live and work in.
How you use the word 'shithole' depends on your gender, which paints Trump's latest misstep as yet another case of toxic masculinity.
Memorials to the terror attack have become visual and transient – a battleground to contest parts of French identity.
Developers will now be responsible for dealing with noise issues from nearby music venues – but it will take real community activism to prevent closures.
Mass production with a touch of customisation could be the best future for affordable homes.
It's time to turn Oxford Street into a haven for walkers.
How to make your holiday better for the environment through sustainable tourism.
Dramatic images of "bike graveyards" shouldn't be taken at face value – there's hope for bike-sharing schemes yet.
Local residents of St Andrews feel university growth has come at too high a cost – it's time for local councils and universities to overcome the divide between town and gown.
Residents may be right to fear for their lives.