At first glance, it looks like the start of a human pregnancy: A ball-shaped embryo presses gently into the receptive lining ...

When you take a drug, where in your body does it actually go? For most medications, scientists can make only educated guesses ...

One of the most detailed 3D maps of how the human chromosomes are organized and folded within a cell's nucleus is published ...

What makes someone a "morning lark" or a "night owl?" Why does jet lag hit us so hard, and why do some people struggle each ...

As you walk down a particular hallway on the seventh floor of the Humphrey Building in Washington, D.C., you'll find a line of photographic portraits of all the people from years past who have led the ...