20th Century (1 jan 1901 ano – 31 dez 2000 ano)
Descrição:
- 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
Adicionado na linha do tempo:
Data:
1 jan 1901 ano
31 dez 2000 ano
~ 100 years
Imagens:
![]()