In the scorching deserts of Namibia, Oman, and Saudi Arabia, scientists have discovered intriguing structures in marble and ...

The Big Obstacle In August 1865 early snows defeated the Central Pacific's initial attempt to begin work on Tunnel No. 6 ... except for the single old engine used to hoist debris.

Almost as soon as the rails were pulled up in 1942, bats moved into the old railroad tunnel just south of Fredericksburg on Old San Antonio Road. Millions of bats make the tunnel their home in the ...