NASA Photo ID: STS031-72-017       File Name: 10063599.jpg
  Film Type: 70mm                    Date Taken: 04/29/90
  Title: Lake Chad, Chad, Africa
  Africa's Lake Chad where the borders of Chad, Niger, Nigeria and Cameroon 
  merge (13.0N, 14.0E) has been undergoing change for the past 25 to 30 years  
  when it was first noticed that the lake is drying up.  Since then,
  astronauts  have been photographing it on a regular basis to record the
  diminishing lake  bed.  This lake was once the aproximate size of Lake Erie
  but is now only  about half that size and is still receeding.                  
  Subject terms:
  EXTINCT LAKES                           
  SAHARA DESERT (AFRICA)                  

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