Modern medicine, from vaccines and IVF to gene editing and GLP-1 medications, is underpinned by animal research, a field marked by a century-long debate between two polarized viewpoints. One side decries it as wasteful and abusive, while the other asserts its essential and well-regulated nature. The reality, according to science writer Rebecca Skloot, author of "The Immortal Life of Henrietta Lacks," lies in a more nuanced middle ground.
Skloot highlights that emerging technologies like organoids and organs-on-chips are increasingly capable of replacing animal testing. However, she cautions that a complete replacement for most research is still distant. Overstating the immediate capabilities of these new technologies, Skloot warns, could lead to a backlash that hinders the field's progress and diverts funding and attention from improving the welfare of animals still used in research.
This ongoing discussion echoes the principles proposed in 1959 by scientists William Russell and Rex Burch. Their framework, known as the 3Rs, advocates for replacing animal use wherever possible, reducing the number of animals required, and refining research methods to improve animal welfare. They recognized that while replacement is a desirable goal, it should not be the sole focus of humanitarian efforts in scientific research. Skloot's insights were shared as part of TIME's initiative asking various figures, including Bill Nye and Emily Oster, to identify scientific advances defining the U.S. as it approaches its 250th anniversary.