image: University of Utah physics doctoral student Pei-I Ku prepares a sample for the digital microscope she uses to make movies and photographs of the AIDS-causing human immunodeficiency virus ...

What criteria or characteristics would you use to group living things versus nonliving things? Scientists have grappled with this question for years, and the debate is still ongoing in the scientific ...

Scientists headed by teams at La Jolla Institute for Immunology (LJI) and Purdue University have published the results of a study that they claim represents the first-ever look at a key stage in the ...