Front: Local earthquake risk culture plays a significant role in the way the public engages in educational efforts. “Educating for Earthquake Science and Risk in a Tectonically Slowly Deforming Region,” an EduQuakes column by Custódio et al. (this issue), describes an earthquake education and outreach program tailored for Portugal, where large earthquakes are extreme events that occur with long return periods. Program objectives include increasing earthquake awareness and preparedness as well as boosting the quality of earthquake-science education (to attract talented students to geosciences). Here high-school and primary-school students learn about earthquakes using a portable shake table and practicing “drop, cover, and hold-on,” and student artwork illustrates key points of the lessons.Back: During the past five years, accelerated oilfield fluid injection has led to a sharp increase in the rate of earthquakes in some parts
of North America. In the sedimentary basin of western Canada, most recent cases of induced seismicity are highly correlated in time and space with hydraulic fracturing, when fluids are injected under high pressure during well completion to induce localized fracturing of rock. It appears that the maximum observed magnitude of events associated with hydraulic fracturing may exceed the predictions of an often-cited relationship between the volume of injected fluid and the maximum expected magnitude. These findings, presented in “Hydraulic Fracturing and Seismicity in the Western Canada Sedimentary Basin,” by Atkinson et al. (this issue), have far-reaching implications for assessment of induced seismicity hazards.