Geobulletin alpha

Source info:

Author:	Michael J. Ryan, Ph.D.
Date:	2015-10-20 16:59:00
Blog:	Palaeoblog
URL:	http://palaeoblog.blogspot.com/2015/10/life-on-earth-started-41-billion-years.html

Summary:

Potentially biogenic carbon preserved in a 4.1 billion-year-old zircon. 2015. PNAS UCLA geochemists have found evidence that life likely existed on Earth at least 4.1 billion years ago—300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly after the planet formed 4.54 billion years ago. The new research suggests that life existed

Content analysis:

Geographic context:

Location	Country	Latitude	Longitude
University of California Los Angeles	US	34.0644	-118.445

Keywords:

billion-year-old zircon, carbon, discovery, Earth, evidence, life, new research, PNAS, previous research, Started, UCLA geochemists