For more than a century, the human appendix has been written off as a biological relic, a shrunken leftover from plant-eating ancestors that serves no real purpose. That view is now outdated. A ...

Something happens when a rat starts running. Not just the obvious things, the faster heart, the warming muscles, the rhythmic percussion of paws against the wheel. Something quieter. Something that ...

A new investigation by animal rights advocates shows horses being flown for slaughter in Japan continue to suffer injuries, ...