A survivor of the February 2011 earthquake in Christchurch, New Zealand, uses a wheelbarrow to demonstrate how shaking turns solid ground into the liquefied earth that causes buildings to crumple.
Dr. Emily Willingham came to EarthSky from The Biology Files. Her background includes a PhD in biological sciences, a bachelor's degree in English, and a published book: The Complete Idiot's Guide to College Biology. She is a scientist, writer, editor, teacher, autism & ADHD parent, and "all around opinionator." Says Emily: "Got an English BA & biology PhD, & I'm not afraid to use them, often together."