News tagged with animal evolution

Oxygen's challenge to early life

The conventional view of the history of the Earth is that the oceans became oxygen-rich to approximately the degree they are today in the Late Ediacaran Period (about 600 million years ago) after staying relatively ...

Jan 05, 2011
4.4 / 5 (15) 10 | with audio podcast

MicroRNA: A glimpse into the past

The last ancestor we shared with worms, which roamed the seas around 600 million years ago, may already have had a sophisticated brain that released hormones into the blood and was connected to various sensory organs. The ...

Feb 01, 2010
4.8 / 5 (4) 0 | with audio podcast