As of November 2nd, humans have been living continuously in space for 15 years aboard the International Space Station.

• Station Hosts Crews Conducting Science for 15 Years Today – Space Station
• 2000 vs Now: 15 Years of Humans on Space Station – NASA
• Infographic:15 Years of Continuous Human Presence Aboard the Station – NASA
• White House, NASA Administrator Statements Mark ISS Anniversary – NASA

With a little luck, foresight and fortitude, humans will always be in space from now on and in ever growing numbers.

* Here ‘s a nice view of the station as seen from the Space Shuttle Discovery on March 7, 2011 during mission STS-133:

* Here’s a well made compilation of timelapse videos of the earth as seen from the ISS:

*  Here’s an infographic showing the construction of the station (Click here for large verson):

* You can see live imagery of the earth as seen by a high-definition camera mounted on the exterior of the ISS (sometimes the feed is off for technical adjustments):

Broadcast live streaming video on Ustream

* With a modest telescope, the station can be imaged from the ground as it passes overhead.  For example,

Roger Hutchinson took this image as the ISS 
passed over London on 9th April 2105