Shoppers hunting for Black Friday deals seemed to include a record number of those in the market for firearms; the FBI says it fielded 203,086 background check requests for gun purchases on the da ...

More Americans had their backgrounds checked purchasing guns on Black Friday than any day on record, according to data released by the FBI this week. The National Instant Criminal Background ...

"We have evidence of what we call 'the gravitational wave background,' which is a hum of ... of this gravitational wave is two supermassive black holes merging — a type of explosive collision ...