Happiness is an electrifying and elusive state. Philosophers, theologians, psychologists, and even economists have long sought to define it. And since the 1990s, a whole branch of psychology—positive ...

Genetics is important to our understanding of selection for at least three reasons: first, although the concept of selection seems obvious, it was not until selection was linked to Mendelian genetics ...

Coffee contains caffeine and other bioactive compounds, including antioxidants like chlorogenic acids plus cafestol, kahweol, and trigonelline, though amounts vary per cup. Caffeine blocks adenosine, ...

Cloud-9, shown in magenta. The circle represents the region where researchers focused their search for stars—the peak of radio emission. NASA, ESA, VLA, Gagandeep Anand (STScI), Alejandro ...