Why I Love My City
Rocket scientist Tim Pickens on his city's culture of scientific discovery.
Not content with putting a man on the moon in 1969, the aeronautics agency once aimed to create an entire space-based neighborhood.
Astrophysicists suggest looking for the shimmering light of cities on far off planets
A pair of slideshows illuminating what makes a public gathering space work and what doesn't
NASA's 1970s ideas for creating colonies between the Earth and the moon