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Chipmunks and voles living in Chicago have undergone measurable evolutionary changes over the past 125 years, adapting to urban life by developing smaller teeth and altered hearing structures.
Jun 26, 2025
A remarkable fossil find in Mallorca has unveiled what may be the world's oldest known ancestor of mammals - a dog-sized predator with saber teeth that lived 270 million years ago.
Dec 17, 2024
Monarch butterflies, with their striking orange and black wings, are some of the most recognizable butterflies in North America.
Jul 31, 2024
Global Bird Family Tree Uncovers Tropical Color Mystery A groundbreaking study has shed new light on the evolution of colorful bird feathers, challenging long-held assumptions about tropical bird diversity.
Jul 26, 2024
Forty million years before the first dinosaurs evolved, a ferocious predator lurked in swampy waters.
Jul 3, 2024
Dec 7, 2023
More than 4 billion years ago, when the Solar System was still young and the Earth was still growing, a giant object the size of Mars crashed into the Earth.
Oct 23, 2023
When an asteroid hit the Earth 66 million years ago, it set off a devastating mass extinction.
Oct 9, 2023
Scientists studying mice from the Andes Mountains in Patagonia noticed something they couldn’t explain: the mice from the western side of the mountains were bigger than the ones from the east, but DNA said that they were all from the same species.
Sep 1, 2022
