Astronauts on flight STS-1 captured this view of the Tigris and Euphrates through a viewport on the space shuttle during its first flight in April 1981.
With almost 23 million residents, Mumbai, India, is the second largest city in the world. Rapid population growth in Mumbai is evident in this image from the International Space Station that shows several regions of the city with active land reclamation activities on its coasts, bays and hinterlands.