Japanese macaques are exposed to various stressful situations in the wild, including rank fights and mating competitions. Researchers recently took a closer look at how genetics ultimately control the release of stress hormones in these animals.
Fossils of a 508 million-year-old shrimp-like creature known as "Waptia" were discovered in China carrying several eggs with embryos. This find represents the earliest known evidence of brood care, researchers say.
Parasitic nest flies threaten Darwin's finches of the Galapagos Islands. Based on a recent study, however, researchers from the University of Utah suggest human intervention could help save these iconic birds.
An extinct group of marine reptiles known as plesiosaurs had a very unique body structure. New computer simulations suggest the animals likely used it to move through the water like a penguins.
A new dinosaur species with a "sail" on its back was recently unearthed in northeastern Spain. Researchers say this mysterious "sail" helped the dinosaur regulate its body temperature or store fat.
Six new clawed frog species were recently found in Central and West Africa. These amphibians are particularly unique, in that they inherit all of their mother's and fathers' genes instead of half from each. Researchers continue to search for the "lost ancestor" that gave rise to this genetically diverse species.
A new study revealed face mites – microscopic animals that live on our faces and in our hair – evolved along side humans. Moreover, people from different parts of the world host different mite lineages that follow families through generations.
Following the 1964 Alaskan earthquake, marine-dwelling three-spine stickleback fish had to rapidly evolve to live in freshwater ponds. This sheds light on how other species may be impacted by climate change.
The evolution of modern birds was largely shaped by Earth's changing geography and climate. In a recent study, researchers discovered the birds we know today share a common ancestor that arose in South America 90 million years ago.
Fossils of kinorhynch worms, also known as mud dragons, dating back more than 530 million years were recently unearthed in South China. Researchers say these ancient, microscopic worms fill in a huge evolutionary gap.
How did skates and rays develop their unique wing-like fins? Researchers from the University of Chicago recently revealed the animals altered their body structure to live on the ocean floor, and to do so they relied on repurposed genes.
Fossils excavated from the fossil-rich Bighorn Basin in Wyoming shed new light on the different physical and behavioral traits of early carnivorous mammals known as hyaenodontids.
Male crickets emit a high-frequency chirp to startle potential female mates into revealing their location. This, researchers say, likely evolved from males impersonating predatory bats.
Researchers from University of Queensland have identified one of Australia's newest dinosaurs, Kunbarrasaurus. This dinosaur's unique characteristics suggest it is a distinctly different species than previously classified.
Some prairie voles are monogamous, while others seek out multiple mates. In a recent study, researchers from the University of Texas at Austin reveal sexual behavior is largely controlled by genetic differences in the rodents' brains, suggesting natural selection has allowed for both characteristics to co-exist.