1. Scientific and Technological Achievements at the Turn of the Century

2. Scientific and Technological Advancements In the late 1800s and early 1900s, advances in science and technology led to dramatic changes in daily life Medical discoveries Better sanitation Scientific discoveries

3. Advances in Medicine A series of discoveries revolutionized the field of medicine at the turn of the twentieth century The Germ Theory and Disease – In 1870 Louis Pasteur discovered a link between germs and disease – Proved that killing certain germs stops the spread of certain diseases

4. Advances in Medicine The Germ Theory and Disease – German physician Robert Koch discovered the bacteria that causes tuberculosis – Koch and Pasteur’s work led to germ theory Diseases are caused by the action of microorganisms – People start washing more!

5. Advances in Medicine Joseph Lister and Antiseptics – Before the mid 1800s, even a minor surgery might be followed by infection and death – Surgeon Joseph Lister believed there was a connection between infection and germs Lister insisted that his doctors use antiseptics at all stages of operations

6. Advances in Medicine Antibiotics – Alexander Fleming discovers the mold penicillin – This mold killed bacteria! – This antibiotic was not widely distributed and used until the 1940s

7. Improved Standard of Living Better Wages and Working Conditions – Industrialization led to horrible working conditions for most people in Industrialized Europe – Legalized labor unions, reformers, and working- class voters pushed for better working conditions

8. Improved Standard of Living Better Housing – Urban conditions were improving in the late 1800s and early 1900s – City governments paved their streets – Housing improved – Architects began to use steel to construct stronger, taller buildings

9. Improved Standard of Living Improved Sanitation – Underground sewage systems! – Death rates were dramatically cut… Why?

10. Population Explosion

11. New Inventions!

12. Technology of the Industrial Age Inventor or DeveloperNationInvention or DevelopmentYear Henry BessemerGreat BritainProcess to turn iron ore into steel 1856 Alexander Graham BellUnited StatesTelephone1876 Thomas EdisonUnited StatesElectric light bulb1879 Gottlieb DaimlerGermanyAutomobile1887 Henry FordUnited StatesMass-produced automobile1903 Orville & Wilbur WrightUnited StatesAirplane1903

13. New Scientific Theories The Curies and Radioactivity – Conducted extensive experiments with radioactivity – Discoveries such as radium and polonium had an enormous effect on fields such as energy production, medicine, and military technology

14. New Scientific Theories Einstein and Relativity – Theory of Relativity

15. New Scientific Theories Freud and the Human Mind – The unconscious drives human behavior – Freud felt that the tension between the drives of the unconscious mind and the demands of civilized society caused psychological and physical illness