The F.B.I. also increased its reward to up to $100,000 for information leading to the location of Nancy Guthrie or the arrest and conviction of anyone involved in her disappearance. Video Hunt: ...

Each night, Louis-Hunter Kean spiked a fever as high as 104.5. He would sweat through bedsheets and shiver uncontrollably. By ...

Humans develop sharp vision during early fetal development thanks to an interplay between a vitamin A derivative and thyroid hormones in the retina, Johns Hopkins University scientists have found. The ...

With a Feb. 14 deadline looming, the seven states in the Colorado River Basin have not reached an agreement on how to manage ...

Colorado’s prison system is on track to exceed capacity within the next year, driven by a sharp slowdown in parole releases, staffing shortages and an aging inmate population — all as lawmakers ...