Featured This Month
East Africa is one of the most geologically intriguing places on the planet-a place where the African continent is literally ripping apart. Deep rift valleys, active volcanoes, and hot springs are dramatic evidence for the powerful forces deep within the earth that are slowly reshaping the continent. Join geochemist David Hilton on an adventure to the East African Rift Valley and learn how he and his colleagues utilize geologic samples to understand this dynamic region of our planet.
Extraordinarily large crown fires have burned during recent decades in some western US forests as a consequence of forest and climate changes. Wind events have played important roles in driving major runs during many of these wildfires, including the most rapid burning rates yet recorded in some forests, at more than 40,000 acres per day, over multiple days. Tom Swetnam, Director, Laboratory of Tree Ring Research, College of Science at the University of Arizona, gives his compelling perspective on changing atmospheric circulation patterns and consequent effects on both drought, winds and extreme fire behaviors. Recorded on 3/4/2014.
CARTA: Male Aggression and Violence in Human Evolution: Resource Unpredictability, Socialization, and War; Violence: What’s Culture Got to Do with It?; and Do Hunter-Gatherers Tell Us About Human Nature?
In the last few decades, new sources of evidence have continued to indicate that male violence has played an important role in shaping behavior in the human lineage. The frequency and nature of such violence varies widely among populations and over time raises questions about the factors responsible for the variation. This symposium takes a fresh look at the causes and consequences of variation in aggression, both between and within species. Carol Ember (Yale Univ) begins with a discussion about Resource Unpredictability, Socialization, and War, followed by Polly Wiessner on Violence: What's Culture Got to Do with It?, and Robert Kelly (Univ of Wyoming) who asks Do Hunter-Gatherers Tell Us About Human Nature? Recorded on 05/16/2014.