Have you ever been walking in a dark alley and seen something that you thought was a crouching person, but it turned out to be a garbage bag or something similarly innocuous? Me too. Have you ever seen a person crouching in a dark alley and mistaken it for a garbage bag? Me neither. Why […]

In 1989, scientists at the United States Fish and Wildlife Service and the National Zoo published a study on migratory songbirds with alarming results. The study relied on 22 years of data from annual surveys of more than 60 neotropical species, birds that breed in North America and overwinter in Central and South America. And […]

No matter how safe the lab is, humans working with deadly bioagents can make errors.

Andrew Wiles thought he had a solution to an age-old puzzle. Until it began to unravel.

How Julian Jaynes’ famous 1970s theory is faring in the neuroscience age.

It’s become common to think about cultural change the same way we think about biological evolution—so common that it may obscure whether the comparison really works. Though there remain many questions yet to answer about biological evolution, it’s a process that’s well-understood. We know, in great detail, how variations emerge, how they’re passed on hereditarily, […]