More to the point, if science fiction is any guide, building underground cities is usually a bad idea.

FORBES: Underground Living is a Solution in Search of a Problem

His main thesis is that the buzz of urban life, and the opportunities it offers for co-operation and collaboration, is what attracts people to the city, which in turn makes cities into the engines of art, commerce, science and progress.

ECONOMIST: Welcome to a world of high living

Schools across the nation are in need of a diverse set of talented teachers, especially in our big cities and rural areas, and especially in the areas of Math, Science, Technology, Special Education, and English Language Learning.

WHITEHOUSE: Our Top Stories

Today, cities across the world -- including Moscow, Tokyo, London, Houston, even a South Pole science station -- are celebrating the anniversary.

CNN: 40 years of space flight, 20 years of shuttles