- Discovery of Insulin (1921)was also a huge advancement as a group of scientists came together and helped mass-produce insulin from their tiny sample. this medicine even though it doesn't completely cure diabetes, helped keep the diabetics alive as long as they received their insulin on time.
- Another discovery in the field of astronomy was done by Edwin Hubble during the year 1924. his research laid the foundation for the big bang model because he showed that our galaxy wasn't the only one that existed.
- Penicillin was discovered in 1928 by alexander Fleming. he discovered it because he found a fungal colony during one of his experiments and realized that he could use this same fungi to fight the bacteria. therefore penicillin was created as an antibiotic and this medicine saved millions of lives, especially of the soldiers fighting in WW1.