The issue focused on the study of medical research. The science used to support these studies is based on scientific theory, but its actual production and practice are all subject to economic factors. One example: More than two-thirds of US researchers have less than a $1 million per year in research funding. This means that even if research scientists were given more money, they would not be able to keep up with the demand for their work. "It's like people who work for Amazon or Google," says Science magazine.