Navicula diatoms, light microscopy footage. Diatoms are single-celled algae that form an important part of the plankton at the base of the marine and freshwater food chains. Each diatom's siliceous cell wall is divided into two halves, one of which fits within the edges of the other like a box with a lid. Filmed in a water sample from the Heiligensee, a lake in Berlin, Germany.
The West Germans hold demonstrations along the Berlin Wall in Berlin, Germany.
Demonstrations along the Berlin Wall in Berlin, Germany. The bell of freedom rings in East Berlin. View of the Berlin Wall. The American flag flutters from a pole over a United States check post. U.S. soldiers drive past the Berlin Wall in an army jeep. A mayor and officials hold memorial services for those who died trying to escape from East Berlin. The West Germans march along a road. Police officials try to control the mob. Location: Berlin Germany. Date: August 16, 1962.
A tunnel from East to West Berlin being recovered by the East Berlin police in Germany.
An underground tunnel in Berlin, Germany. An apartment in East Berlin near the Berlin Wall. "Heidelberger Str." Street sign behind the Berlin Wall. A sign reads 'You are leaving the American sector' at Checkpoint Charlie. An underground tunnel leading to West Berlin where Heinz Jercha was shot dead for helping East Berliners escape. Underground tunnel at Heidelberger Strasse 75 at the sector border between Berlin-Treptow and Berlin-Neukölln. The East Berlin police find a stairway leading to the tunnel. A woman walks out of a door. Berlin Wall separating East and West Berlin. Location: Berlin Germany. Date: April 2, 1962.