Marine scientist and science communicator Ellen Prager explores hurricanes, earthquakes, tsunamis, volcanoes and also climate change in her book Dangerous Earth (left). Prager's technique in each chapter is to tell us what is known scientifically and what is as yet unknown.

Just to inform our readers, Christ warned us in Matthew 24 what to look out for.  These threats are real, and someday will shake the earth more and more.