Shinichi Kuramoto of the Center for Deep Earth Exploration in Japan displays a replica of earthquake fault rock. TOSHIFUMI KITAMURA/AFP/Getty Images hide caption

itoggle caption TOSHIFUMI KITAMURA/AFP/Getty Images

A makeshift memorial hangs on a lamp post across the street from the Washington Navy Yard, on Sept. 20. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

House Oversight Committee chairman and megamillionaire Darrell Issa is reportedly worth more than $355 million. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

A lone bison in Theodore Roosevelt National Park, near where fracking has become standard practice. Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

Donald Trump says he is considering running for president in 2016. Robin Marchant/Getty Images hide caption

itoggle caption Robin Marchant/Getty Images