Over the next few decades, half of global economic growth is predicted to come from the slums of developing world cities. Gaia Vince believes the key to the coming urban revolution is how these shantytowns evolve.
The BBC has provided an infographic timeline indicating when scientists and researchers predict valuable resources and ecosystems will disappear, urging planners and officials to address the dangers of current population and consumption levels.
In 2001, Eero Saarinen's famed TWA Terminal in John F. Kennedy International Airport closed after American Airlines bought the airline out. Completed in 1962, this terminal is now rarely accessible by the public.
Bolivia took two million cars off the street in nine cities during the "National Day of the Pedestrian." The event arrived when President Evo Morales' government plans to build a highway through the Amazon rainforest, the BBC reports.
Paul Mason takes a tour of Manila's 10-year-old Estero de San Miguel slum to test the theory that slums have upsides and finds that understanding the question's realities is as important as trying to find the answer.
Despite wildlife declines caused by factors such as Britain's urban sprawl, researchers suspect that cities are better habitats for pollinating insects because they have a greater number and diversity of flowers, reports Rebecca Morelle for BBC.