“Our existence is probably not an evolutionary fluke,” says Jennifer Macalady, a study co-author and microbiology professor ...

For decades, scientists believed that intelligent life was a rare cosmic accident. A new study challenges that idea, arguing that humanity's emergence was not an improbable event but rather a natural ...

Humanity may not be extraordinary but rather the natural evolutionary outcome for our planet and likely others, according to a new model for how intelligent life developed on Earth.