London - June 19 2018: Volunteers cleaning the southern shores of the Thames from waste during low tide.
It's not just the ocean we need to worry about – plastic is accumulating in the world's rivers, too.
Camera never lies.
If you thought police surveillance was mere CCTV, it's time to catch up on what's happening on the other side of the lens.
Turning a corner.
Academic experts on how the humble car could evolve to become an unlikely hero in the global fight against climate change.
Gone in a flash.
Driverless cars will form a fast, efficient transport network, which will make car ownership redundant. But they could also spell the end of public transport.
Having fun yet?
Despite efforts to encourage a shift to sustainable transportation, traffic congestion is often the focus of debates over mobility. Motorists endlessly demand more roads, but is this really a solution?
Whether it's through begging or building shelters, homeless people are trying to make their lives better.
The doner kebab, a typical “German” meal?
Jason M Ramos
While thought of as an unpretentious fast-food dish, the doner kebab is a symbol of the social, political and identity issues facing European society today.
There is a growing sense that the British authorities would rather forget their weapons testing history.
Sometimes you want to take it slow.
Technology and data are being harnessed to increase productivity in cities, but there also need to be 'slow moments', when people can pause to enjoy their surroundings.
London: a clean future?
Drivers of polluting vehicles will face a daily charge, but evidence suggests it's a price worth paying.
Find out what the Ultra Low Emission Zone is, how it works and what Londoners make of the new measures.
View of Kampala.
China is funding global infrastructure projects to expand its influence and capacity for economic growth.
Football is supposed to be the 'people's game', but the English Premier League is easier and cheaper to follow if you are a fan of a club based in London or the prosperous southeast.
Other European cities have been quick to sense opportunities from Brexit.
Always delicate balancing act, ensuring London maintains its appeal to tech start-ups will prove more difficult after Brexit.
Police in Camden, after a young man of Somali origin was stabbed in February 2018.
Dominic Lipinski/PA Archive
Somali community leaders should help to foster links with their traditional culture.
Socialisation of housing would see profits from rent put back into the maintenance and modernisation of the buildings.
Homelessness in the UK has been rising for a decade – short term funding may have offered respite, but it won't lead to long term solutions.
Mayor of London Sadiq Khan at the Walthamstow youth project, Spark2Life.
Stefan Rousseau/PA Archive
Knife crime is a symptom of the toxic environments that adults create around children.
An attack in London left a man dead. But did you hear about it?
London is struggling to manage a violent crime epidemic, yet the Manchester attack attracted global attention.
Lin-Manuel Miranda plays Jack, a lamplighter, in the sequel to the original 1964 film.
The lamps that once lit London's streets have come to symbolize a certain time and place in British history.