From bizarre ancient markings to random numbers and letters, codes and ciphers have been used for millennia to send secret messages, hide identities and operate outside the law. Unravelling these ...

NPR's Melissa Block talks to Oliver and Sheila Lawn, former code-breakers in World War II who have been called in to try to decipher the meaning of mysterious letters carved into a monument at ...

BEATA MEGYESI strode past the Pontifical Swiss Guards, in their Renaissance-era uniforms. She was headed not for the Sistine Chapel or St Peter’s Basilica, but the Vatican’s archives. Precious few ...