A sales assistant watches TV sets broadcasting a news report on North Korea’s nuclear test, in Seoul, South Korea. Kim Hong-Ji / ReutersShortly after North Korea claimed it had tested a hydrogen bomb—a weapon potentially hundreds of times more powerful than the fission bombs the country had already set off—seismologists at the United States Geological Survey, or USGS, went to work trying to understand the event. Their early findings suggest that a nuclear-bomb test did occur but that it wasn’t a hydrogen bomb. So how do you tell the difference? More From Our Partners U.S. Suspects Russian Hackers in …read more
Source: The Atlantic
