Biology is a natural science that studies life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy.

Forensic engineering has been defined as "the investigation of failures-ranging from serviceability to catastrophic-which may lead to legal activity, including both civil and criminal".

Forensic science is a multidisciplinary field that applies scientific methods and techniques to solve crimes and analyze evidence for legal purposes.

Pathology is a branch of medical science that involves the study of disease processes, their causes, and their effects on body structures and functions.

Toxicology is a scientific discipline that studies the harmful effects of substances on living organisms and the environment.

The Wikipedia page on the United States provides a comprehensive overview of the country.