Phase diagram of the model (top) and four example trajectories. The four different regions of the phase diagram (defined by the ratio of in-group love to out-group hate and the ratio of group sizes) ...

An electromagnetic wave or signal traveling from “here” to “there” has an electrostatic field component that we call its E-field and whose direction we assign as the signal’s polarity. Often, the ...

The dictionary publisher said Americans from competing tribes looked up the definition to better understand divided politics at home and worldwide. By Etan Vlessing Canada Bureau Chief If you’ve been ...