The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

Blue blood may look alien, but it’s one of evolution’s most elegant solutions to life in extreme environments. Here’s how ...

The origins of consciousness date back about 540 million years ago, when animal bodies became more complex. Feelings like ...

Crab-like body shapes evolved independently at least five times, making “crab” more a design than a lineage. MAGA reacts to ...

A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

Earth’s first sponges may have been ghostly, soft-bodied pioneers—ancient animals that evolved long before their skeletons ever appeared in stone.

During the first few years of the COVID-19 pandemic, the virus SARS-CoV-2 was detected in an increasing number of non-human ...

Sponges are among Earth's most ancient animals, but exactly when they evolved has long puzzled scientists. Genetic ...

This has been quite the wild year in human evolution stories. Our relatives, living and extinct, got a lot of attention—from ...

With copper-blue blood prized by modern medicine and a body plan older than dinosaurs, the horseshoe crab reveals how ancient ...

About 445 million years ago, Earth nearly wiped out life in the oceans. Glaciers spread across the supercontinent Gondwana, ...