David Knuffke Is an Educator Based on Long Island.

You can learn more about his work here.

      

  
     
    
       
        
           
        
           
                
           
        
           
        

        
         
             When giant icebergs collide 
 via   www.wired.com

When giant icebergs collide via www.wired.com

When giant icebergs collide

via www.wired.com