Sexual reproduction may have emerged as a "supercharged repair mechanism" to protect cells from DNA damage caused by another ...

Current hypotheses suggest that all life on Earth evolved from a common ancestor that diversified into the variety of organisms seen today. Scientists propose that the eukaryotic branch of this family ...

Most cultivated and characterized eukaryotes can be confidently assigned to one of eight major groups. After a few false starts, we are beginning to resolve relationships among these major groups as ...

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 ...

Editor’s Note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Plants, algae, fungi, and animals — ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Ancient organisms that bobbed through Earth’s waterways at least 1 ...

Groundbreaking fossils unearthed in China suggest that multicellular organisms arose earlier than scientists previously thought. The fossils, of what may be an ancient type of photosynthetic alga, are ...