This has some interesting articles, one about new life on earth,,,
[link to science.nasa.gov]

This one:

[link to science.nasa.gov]

Discovery of "Arsenic-bug" Expands Definition of Life

This finding of an alternative biochemistry makeup will alter biology textbooks and expand the scope of the search for life beyond Earth. The research is published in this week's edition of Science Express.



Sorry if it was already posted.

edit: to add info of the article I was pointing out.