This press release from UC Berkeley explains the work of archaeologist Steven Shackley, whose research shows that the Hohokam developed an extensive trade network that spread to southern California. Read a description of the Hohokam...

Find Native American tribes grouped by geographic location as well as relevant information and pictures.

No scientific phenomena concern us as much as the daily evolution of weather systems. We live in a culture where weather, the state of the atmosphere at a given time and place,helps us define regional cultural variations. States such as...