A recent study shows that (clause).
This is how scientific studies are often reported in the news.
A "study" is a research project done by scientists or social scientists. We talk about the results of the study by saying what it "shows":
Our research shows that there may actually be liquid water present beneath the moon's surface.
Studies have shown that women who take folic acid supplements during early pregnancy reduce the risk that their baby will be born with neural tube defects.