20th Century (1 Jan 1901 Jahr – 31 Dez 2000 Jahr)
Beschreibung:
- 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
Zugefügt zum Band der Zeit:
Datum:
1 Jan 1901 Jahr
31 Dez 2000 Jahr
~ 100 years
