1900-1909: Medical imaging -- Automobile -- 1910-1919: Telephones -- Aircraft -- 1920-1929: Electrification -- Structural materials -- 1930-1939: Color photography -- Sound and music -- 1940-1949: Rocketry -- Radio story -- 1950-1959: Nuclear energy -- Plastics -- 1960-1969: TV age -- Space exploration -- 1970-1979: New medicine -- Water resources -- 1980-1989: Recycling -- Home computers -- 1990-1999: Genetics -- Digital age -- 2000.