A medical condition of excess body fat that increases the risk of numerous health problems....
The Organization of the Petroleum Exporting Countries, coordinating petroleum policies....
A dramatic art form combining singing, orchestral music, and stagecraft....
Software with source code available to the public to use, modify, and distribute....
The branch of medicine that deals with the diagnosis and treatment of cancer....
The gravitationally curved trajectory of an object around a celestial body....
A Turkish empire that ruled much of the Middle East, Southeast Europe, and North Africa....
The vast body of salt water covering about 71% of Earth's surface....
A geographic region of the Pacific Ocean, including Australia, Melanesia, and Polynesia....
The study of the structure and properties of carbon-containing compounds....