The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the CIA headquarters, just took a bizarre twist. Though cryptographers broke the first three passages ...

Adopted by Caesar, Augustus (c.62 BC – 14 AD / Reigned 31 BC – 14 AD) had to fight for his throne. His long rule saw a huge expansion in the Roman Empire and the beginnings of a dynasty that, over the ...