More than 500 million years ago, during what is known as the Cambrian period, the seas and oceans on Earth were filled with a ...

Environmental change doesn’t affect evolution in a single, predictable way. In large-scale computer simulations, scientists discovered that some fluctuating conditions help populations evolve higher ...

Cacti may look like slow, stubborn desert survivors, but they’re actually evolving at lightning speed. Scientists studying ...

Researchers at the Technion have discovered how changes in genetic regulatory sequences can lead to alterations in the form and structure of animals—even when genetic regulatory systems are stable and ...

Scientists discovered that some of Earth’s supposed earliest animal fossils were actually giant ancient microbes.