A family of multitasking, multiuser operating systems that derive from the original AT&T Unix....
An imagined place where everything is perfect, a concept central to political theory and literature....
All of space, time, matter, and energy that exist, estimated at 13.8 billion years old....
Late Vedic Sanskrit texts discussing meditation, philosophy, and spiritual knowledge....
A medical specialty focused on the urinary tract and male reproductive system....
Technical and political process focused on the development of land use in urban environments....
A radioactive heavy metal used as fuel in nuclear reactors and in nuclear weapons....
The largest country entirely within Europe, known for its fertile plains and long history....
Electromagnetic radiation shorter than visible light, responsible for sunburns and tanning....
An international organization founded in 1945 to promote peace, security, and cooperation....