Hundreds of tourists were evacuated Wednesday as rail services resumed to and from Peru’s Inca citadel of Machu Picchu a day ...

Hundreds of tourists were evacuated Wednesday as rail services resumed to and from Peru's Inca citadel of Machu Picchu a day ...

The head-on collision occurred between two trains on the line that services the historic Peruvian site Machu Picchu.

Software engineering is the branch of computer science that deals with the design, development, testing, and maintenance of software applications. Software engineers apply engineering principles and ...

Genetic engineering is the act of modifying the genetic makeup of an organism. Modifications can be generated by methods such as gene targeting, nuclear transplantation, transfection of synthetic ...

Protein engineering is the conception and production of unnatural polypeptides, often through modification of amino acid sequences that are found in nature. Synthetic protein structures and functions ...

Nestled on a mountain ridge in the Urubamba Valley, Machu Picchu was built as a palace that was part of a larger royal estate belonging to the Inca emperor Pachacuti (reigned ca. 1420–1472). A team of ...

In 1532, following a lengthy civil war with his brother Huascar, Inca emperor Atahualpa was captured by Spanish conquistador Francisco Pizarro who seized the opportunity to conquer the lands of the ...