Clock shifts since 1947
Minutes
to midnight
1950
1955
1960
1965
1970
1975
1980
1985
1990
1995
2000
2005
2010
2015
2020
0
2
4
6
8
10
12
14
16
18
Cold War ends
USSR and USA test hydrogen bombs
USSR and US relations crumble
Risks from climate change included for first time
Nuclear Non-Proliferation Treaty signed
India and Pakistan carry out nuclear tests