2081: A Hopeful View of the Human Future

aircraft already antennas antimatter Arthur asteroid belt asteroids atmosphere automation beams Bill building called carry century civilization Cluster colonies in space communications cost decades door drive drivers of change Earth economic efficiency electric electronic Ellen engine equipment ergy floater fuel guess heat hour house computer human hundred hydrogen individual industrial Jeannette kilometers land laser less living machine magnetic mass-driver materials miles minicomputer move nations Noel nuclear operation orbit passengers percent plane population possible predictions Primans problem reactor replaced robot satellite ship shuttle signals solar cells solar energy solar system space colonies space habitat Space Studies Institute speed of light star sunlight synchronous orbit technical Tehaneys there's tion told town transport trip turned vehicle Waterford weather Wild Cards