Complex life may have started its rise in Earth’s oxygen-free oceans nearly a billion years earlier than anyone imagined.

The origins of complex, nucleated cellular life – everything from amoebas to humans – may date back a lot further in Earth's ...

Complex life began to develop earlier, and over a longer span of time, than previously believed, a new study has revealed.

Creatures that existed billions of years before plants and animals poised to become dangerous climate change winners. When you purchase through links on our site, we may earn an affiliate commission.

Archaea and bacteria are two different domains of cellular life. They are both prokaryotes, as they are unicellular and lack a nucleus. They also look similar (even under a microscope). However, DNA ...

Ryan Heneghan does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

All modern organisms fall into two classes, eukaryotes and prokaryotes. Eukaryotes (from the Greek meaning “true kernel”) have a cell nucleus that harbours most of the cell’s genetic information and ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 105, No. 41 (Oct. 14, 2008), pp. 15950-15955 (6 pages) Ser/Thr/Tyr kinases, which together comprise a major class ...

Prokaryotes are ancient, simple forms of life that include bacteria and archaea. These cellular life forms lack membrane-bound organelles. Those organelles, which include the nucleus and the ...

Estuaries and Coasts, Vol. 39, No. 4 (JULY 2016), pp. 992-1005 (14 pages) Many aquatic ecosystems are experiencing a decline in their oxygen (O₂) content and this is predicted to continue.