Genes are often invoked to account for why high blood pressure is so common among African-Americans. Yet the rates are low in Africans. This discrepancy demonstrates how genes and the environment interact
To go farther into space, humans will first have to figure out how to get there cheaply and more efficiently. Ideas are not in short supply
Several years ago astronomers came across a new type of star that spews out unusually low energy x-rays. These so-called supersoft sources are now thought to be white dwarf stars that cannibalize their stellar companions and then, in many cases, explode
The extraordinary diversity of cichlid fishes challenges entrenched ideas of how quickly new species can arise
The geometry that describes the shape of coastlines and the patterns of galaxies also elucidates how stock prices soar and plummet