The only well-exposed color image of the Trinity test. (Jack W. Aeby/Manhattan Project/Public Domain) We don't always get to pinpoint the exact moment the world changes. But when the New Mexico dawn ...

Nearly 80 years after the event, trinitite still has the power to amaze.

Car and street surveillance cameras caught the impressive fireball on film as it lit up the night skies in northeastern China just past the stroke of midnight, local time on October 11. The fireball ...