Ecopolis

Scientist Dan Kammen explains the means to provide sustenance to a city with a population of 18 million.

Efforts to meet a megalopolis' transportation needs are examined.

Addressing garbage issues in the megalopolis.

The means to generate energy for the megalopolis are examined.

Efforts to create energy-efficient buildings are examined.

The top five technologies from the series are compared to determine which has the greatest potential to transform the imaginary future megacity.