See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The evolution of some of the earliest complex animals on our planet may ...

Seven hundred million years ago, a remarkable creature emerged for the first time. Though it may not have been much to look at by today's standards, the animal had a front and a back, a top and a ...

700 million years ago, a remarkable creature emerged for the first time. Though it may not have been much to look at by today’s standards, the animal had a front and a back, a top and a bottom. This ...

When people build cities and introduce invasive creatures, resident critter populations sometimes adapt Brian Handwerk | Science Correspondent Several species have evolved in response to human ...

An international team of researchers have published a new review in Animal Behavior revealing how communication enables ...

In this Review, we summarize recent findings from studies of diverse eukaryotes, especially early-branching animals and close relatives of animals. More specifically, we consider the best available ...

The mystery behind why Alaskan horses, cryptodiran turtles and island lizards shrunk over time may have been solved in a new study. The new theoretical research proposes that animal size over time ...

The fossils of ancient salamander-like creatures in Scotland are among the most well-preserved examples of early stem tetrapods -- some of the first animals to make the transition from water to land.

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...

Not every species wins the survival game. Some animals evolved features so counterintuitive they’ve become textbook examples of flawed design. This video dissects how mobility, vision, and defense ...