Take a Breath and Thank a Sponge

Take a Breath and Thank a Sponge

Take a Breath and Thank a Sponge by Carl Zimmer,
New York Times, March 13, 2014
http://www.nytimes.com/2014/03/18/science/take-a-breath-and-thank-a-sponge.html?_r=1

First animals oxygenated Earth's oceans, study
suggests. ScienceDaily, March 9, 2014
http://www.sciencedaily.com/releases/2014/03/140309150540.htm

The paper is:

Lenton, T. M., R. A. Boyle, S. W. Poulton, G. A. Shields-Zhou,
and N. J. Butterfield, 2014, Co-evolution of eukaryotes and
ocean oxygenation in the Neoproterozoic era. Nature Geoscience.
(advance online publication)
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2108.html

A related article is:

Theory on origin of animals challenged: Some animals
need extremely little oxygen, ScienceDaily, February 17, 2014
http://www.sciencedaily.com/releases/2014/02/140217161110.htm

The paper is:

Mills, D. B., L. M. Ward, C.A. Jones, B. Sweeten, M. Forth,
A. H. Treusch and D. E. Canfield. The oxygen requirements
of the earliest animals. Proceedings of the National Academy
of Sciences. Early Edition, February 17, 2014
http://www.pnas.org/content/early/2014/02/13/1400547111.abstract

Paul H.