Researchers have solved a 100-year-old mystery: How did ancient plants emerge from swamps and riverbanks to new habitats with less water?
"...the Black Death was an important selective pressure to the evolution of the human immune system."
The evolution of tree roots may have triggered a series of mass extinctions that rocked the Earth's oceans over 300 million years ago.
Many ancient fish actually favored the cold, dark, barren waters of the deep sea instead of the shallow warm ocean full of resources.
The evolutionary origin of vocal communication dates back more than 400 million years, says research on some unexpected species.
Animals' bright colors can be a warning to predators or an appeal to mates. Scientists looked back in time to figure out why.
Variation among primate eye color may be the result of ambient light in their habitats, new research finds.
A close look at the skeletons of hoppy rodents called jerboas suggests their bones overshot the optimum amount of fusing.
New research may alter the way scientists attempt to uncover the history of Earth as an evolving planet.
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