A planned 'super-dairy' triggered much opposition, particularly regarding animal welfare, and concerns about its impact on the environment and local residents.
700m or so extra people may move to cities by mid-century and may double or triple demand for health services, transport, energy, housing, sanitation, food and water.
Cities are starting to commit to "compassionate solutions" and community service to meet the needs of all their citizens.
The trend towards endless cities could significantly affect population and wealth globally over the next 50 years.
Concern is growing over the state of the Earth's nine, interdependent, "life-support systems".
Might a sustainable future depend upon a greater percentage of people living in cities?
Five innovations that, it is claimed, will make cities smarter in the next five years.
More than 1 billion people live in slums around the world, a figure that the UN believes will double in the next 25 years.
A new collaborative intelligence project lets people connect and share ideas for building smarter cities.
Outer space may offer a new perspective on economic growth; as income rises, so does light usage per person.