Latest about nuclear weapons
How many nuclear weapons exist?
Answers to how many nuclear weapons exist, who has them and how powerful are they.
On the 'doorstep of doom': Doomsday Clock stands at 100 seconds to midnight
The hypothetical clock's hands mark our nearness to annihilation.
Will the Doomsday Clock move forward or back? Watch live to find out
The Doomsday Clock debuted 75 years ago to highlight the threat of nuclear weapons to our survival as a species, a risk now accompanied by escalating climate change and global pandemics.
Dying white dwarf stars may explode like a nuclear bomb
When a white dwarf star explodes as a supernova, it may be detonating like a nuclear weapon on Earth, a new study finds.
US Air Force says it will test bizarre 'hypersonic' weapon this month
At some point in the next few weeks, the U.S. plans to fire an extreme, hypersonic weapon. The question remains: What's the point?
Doomsday Clock stands at 100 seconds to midnight
The Doomsday Clock — a hypothetical clock that measures our nearness to utter annihilation, represented by the midnight hour — maintains last year's time.
Iran is enriching uranium to 20%. What does that mean?
Iran announced it is enriching uranium to 20% purity which increases their nuclear capabilities, but it's not too late to defuse the situation.
Doomsday Clock is now 100 seconds from midnight
A hypothetical timepiece called the Doomsday Clock measures our nearness to Armageddon — by nuclear weapons, climate change and other global threats.
