Two octopuses going at it — or, as marine biologist Peter Godfrey-Smith might put it, engaging in a bit of "ornery" behavior. Peter Godfrey-Smith (CUNY and University of Sydney), David Scheel (Alaska Pacific University), Stefan Linquist (University of Guelph) and Matthew Lawrence. hide caption

itoggle caption Peter Godfrey-Smith (CUNY and University of Sydney), David Scheel (Alaska Pacific University), Stefan Linquist (University of Guelph) and Matthew Lawrence.

Inspektor Jan Gieber of Austrian police shows the inside of the large van outside the police station in Braunau, Upper Austria, on Sunday, where the children were found among 26 migrants trying to reach Europe. Daniel Scharinger/EPA/Landov hide caption

itoggle caption Daniel Scharinger/EPA/Landov

Protesters hold a sign Saturday that reads, in Portuguese, "Don't kill our children," in a march against police and gang conflicts that have left residents of the Complexo de Alemao favela in the crossfire. Silvia Izquierdo/AP hide caption

itoggle caption Silvia Izquierdo/AP

Sakine Arat, right, and Mayrem Bulut are Kurdish mothers camping out between Turkish amry forces and the Kurdish PKK militants, in hopes of preventing clashes. "Mothers on both sides should be doing this," says Arat, 80. Peter Kenyon/NPR hide caption

itoggle caption Peter Kenyon/NPR