20th Century (jan 1, 1901 – dec 31, 2000)
Description:
- Conjoined (Siamese) twins were separated successfully for the first time in 1953- Acquired immune deficiency syndrome (AIDS) was identified as a disease in 1981
- Walter Reed demonstrated that mosquitoes carry yellow fever in 1900
- The human imunodeficency virus (HIV) causing AIDS was identified in 1984
Average life span was 60 to 80 years
Added to timeline:
Date:
jan 1, 1901
dec 31, 2000
~ 100 years