MADISON, WIS. -- In what police said was a 20-year string of killings in Milwaukee, Walter Ellis left behind his DNA all along the way -- everywhere but the one place where it might have saved a life.

Scientists investigating the origins of the coronavirus pandemic might be working with the wrong samples, because some early samples of the virus submitted by a Chinese researcher were deleted from a ...

Researchers in Japan have created a database of metabolites from blood samples collected from over 5,000 Japanese volunteers, making it freely available online as a valuable resource for researchers ...