The 2023 #DoomsdayClock announcement has begun. Follow this thread for highlights from the event or watch it live here:
bit.ly/3J0njqv "The time on the Doomsday Clock represents the judgement of leading science and security experts about the threat to human existence, with a focus on man-made threats." - Bulletin President and CEO @RachelBronson1

THREAD: In a nuclear war, hundreds or thousands of detonations would occur within minutes of each other. Smoke from mass fires after the detonations would inject massive amounts of soot into the stratosphere. As this simulation from @AlanRobock illustrates, a nuclear war between the US & Russia, could waft more than 150 Tg of soot into the stratosphere, leading to a nuclear winter that would disrupt virtually all forms of life on Earth over several decades.

THREAD: Here's how this 1998 thriller novel helped jumpstart the creation of the US Strategic National Stockpile ⬇️ The Cobra Event is a novel by Richard Preston that tells the story of a madman who engineered a virus called “brain-pox” and unleashed it on New York City.

It was widely criticized when it published.

However, at least one high-profile reader was a fan: Bill Clinton.

THREAD: Happy International #WomenInScience day! Take a look at some influential women who have had a positive impact on the field.👇 Janne Nolan made us all part of something. Part of her girl gang. Part of her consensus. Part of her plan to break open the nuclear priesthood and speak truth to power. #WomenInScience ow.ly/ferN50HSZLn

How do humans make sense of the bomb? — a thread of every picture in this photo essay by Robert Del Tredici. ow.ly/zxKL50GnJTh This glass sphere, 3.2 inches across, is the exact size of the plutonium ball in the Nagasaki bomb.
Photo by Robert Del Tredici.
ow.ly/REns50GnLtn