Denmark will acquire long-range, high-precision weapons for the first time in an effort to deter Russia, its prime minister has said. In a firm rebuke of Moscow, Prime Minister Mette Frederiksen told ...

America's greatest unsolved code leads to a $60million treasure - but no one has been able to crack it for 180 years. The mystery of the Beale ciphers begins in 1885, when a small pamphlet with three ...

A Penn team has shown that quantum signals can ride alongside everyday internet traffic on commercial fiber. Their “Q-chip” experiment marks a step toward a scalable quantum internet with ...