At least 170 of the 4,500 manuscripts in Egypt's Sacred Monastery of the God-Trodden Mount Sinai have text invisible to the naked eye.
Did the Germans create Egypt’s new “Frankenstein”?
Zeno, Epictetus, Seneca and Marcus Aurelius, the great Stoic philosophers of the classical world, are back in vogue
The head of UNESCO has lambasted the desecration of historic and religious sites by ISIS, comparing them to the Nazis
The find refutes earlier ideas about humanity’s ability to adapt to altitude.