Since its debut in 1972, punctuated equilibrium (PE) has been both a source of controversy and a catalyst for new thinking in evolutionary biology. Proposed by Stephen Jay Gould and N iles Eldredge, PE argued that most species spend long periods in morphological stasis, only to undergo rapid bursts of change during spe…
For decades, the story of Homo sapiens was told as a relatively straightforward ascent: one lineage, one continent, one eventual global success. But the latest genetic research suggests that our origins were anything but tidy. Instead of a single evolutionary path, modern humans appear to have emerged from the long-del…
When we think about evolution, we usually imagine something like survival of the fittest, organisms scrabbling to adapt to harsh environments, with only the strongest traits passing on to the next generation. But what if much of the story wasn’t written in the open battlefields of nature, but quietly, deep inside the w…