Vision shapes how many animals find food, avoid danger and navigate their world. In animals with two eyes, eye placement is ...

For decades, one puzzle stood out among the many mysteries of early animal evolution: the missing origin story of bryozoans.

When the environment changes dramatically, animals from mollusks to crows can make big changes in their behavior that enable them to survive. For example, marmots and ground squirrels in California ...

A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million years was due to their reproductive methods. Early animals reproduced by ...

The weight problem that land animals cannot escape A blue whale's heart alone weighs around 180 kilograms, roughly the mass ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

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 ...

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