Explore 25 human experiments too disturbing to ignore. From Tuskegee to Nazi camps, discover the shocking medical atrocities that shaped modern ethics. Lea ...

What would a chimpanzee do if you handed it a glittering quartz crystal? Apparently, the same thing many of us would—hold ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have advanced human-animal chimera research by successfully growing human cells within the organs of mice. This ...

Can you measure the weight of a human soul? No, but that didn’t stop Duncan MacDougall from trying. In the early 20th century ...

Between 1919 and 1920, John B. Watson and Rosalie Rayner conducted a controversial experiment at Johns Hopkins, conditioning ...

In a world that demands constant decision-making, your ability to adapt—whether acting alone or with others—matters more than ever. But how do people actually strike that balance between doing things ...

A new study reveals animals might desire to use technology alongside humans. Lemurs showed a preference for interactive ...