fringe science
Refers to scientific ideas or research that are outside the mainstream, often lacking wide acceptance or rigorous evidence. Used in academic or skeptical contexts.
The line between fringe science and pseudoscience is sometimes blurry.
He continues his research in the field of fringe science.
疑似科学 (pseudoscience) is a more negative term for claims that falsely present themselves as scientific, while 境界科学 is more neutral, simply indicating ideas at the edge of mainstream science.
Compound of 境界 (boundary, border) and 科学 (science), literally 'boundary science'. The term is a direct translation of the English 'fringe science'.