Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

Assessing the impact of rising air temperatures on the Antarctic Ice Sheet is hampered by the coarse resolution of climate models. Here, the authors use an observationally constrained statistical ...

Shushtar, Historical Hydraulic System, inscribed as a masterpiece of creative genius, can be traced back to Darius the Great in the 5th century B.C. It involved the creation of two main diversion ...

The musculoskeletal system is an organ system comprising the bones, muscles and connective tissues (including cartilage, tendons and ligaments) that bind tissues and organs together. The main ...