Symbiosis is so much part of life on Earth that it has shaped the evolution and structure of cells. It’s happening almost everywhere we look, including inside our gut.
Cicadas climb up a tree at the U.S. Capitol in Washington, D.C., during the Brood X emergence in 2021.
Bill Clark/CQ-Roll Call, Inc via Getty Images
Horse fossils are abundant and widespread across North America. Scientists often use their long history to illustrate how species evolve in response to a changing environment.
Rock art showing a hunter-gatherer ritual dance; Kondoa, Tanzania.
Nick Longrich
By lifting their gaze to the treetops rather than poking around on the ground, researchers discovered eight new species of masked bees.
Bacteria are evolutionarily primed to outpace drug developers.
National Institute of Allergy and Infectious Diseases, National Institutes of Health/Flickr
Flowers tend to stand out against a natural background. A new study shows this contrast evolved in a key relationship with their most famous pollinators – bees.