News tagged with multicellularity

Oxygen fuels the fires of time

Variations in the Earth's atmospheric oxygen levels are thought to be closely linked to the evolution of life, with strong feedbacks between uni- and multicellular life and oxygen. Over the past 400 million years the level ...

Aug 02, 2010 4.8 / 5 (14) 29 | with audio podcast

Fossils on the Edge of Forever

Astrobiologists have not yet found alien life on other planets. But the fossil record has evidence of aliens of another sort: the Ediacarans that lived on Earth millions of years ago.

Dec 14, 2009 4.9 / 5 (12) 0