Articles written specifically for the GLP or the articles that are reposted from other sources (sometimes in modified form) with permission list the source as Genetic Literacy Project. Excerpted articles list the original media outlet as the source. Excerpts are posted under guidelines for Fair Use and Creative Commons for educational nonprofits (501c3). The GLP’s Fair Use policy for posting excerpts and using images is explained here.
types of oak trees

Infographic: Power of evolution? How oak trees came to dominate North American forests

Scientific American | 
Over the course of some 56 million years, oaks, which all belong to the genus Quercus, evolved from a single undifferentiated ...