Leonardo da Vinci, the famous Italian polymath who painted the Mona Lisa, had a sophisticated geometric understanding far ...

Three shafts recently found near Egypt’s famous pyramids are causing a stir among researchers and skeptics alike. A team ...

This ‘NOVA’ installment explores the possible purposes of strange stone formations found in the Arabian Peninsula.

An estimated 3,000 employees seem to be affected. The federal agency said the return to work would occur Monday, with the costs paid by user fees collected from researchers. By Reed Abelson In a first ...