David Knuffke Is an Educator Based on Long Island.

You can learn more about his work here.

      

  
     
    

      
         
      
         
              
         
      
         
      

      
       
           "Take that, Frailty!" via  craphound.com

"Take that, Frailty!" via craphound.com

"Take that, Frailty!" via craphound.com

The Periodic Table of Periodic Tables