Planes would literally fall out of the sky as technology stopped working and huge waves carrying radiation rushed ashore.
Marine life in the immediate area would be killed and thousands of other animals and humans would remain at risk for long periods of time.
Radiation would disperse, flowing into an unknown number of waterways.
They are among just some of the terrifying prospects the world faces if North Korea followed through with its threat to carry out a hydrogen bomb test in the Pacific.
North Korea’s Foreign Minister Ri Yong-ho told reporters in New York his country may consider doing just that in retaliation to tough UN sanctions.
