Felt something? Terremoto answers the first three questions in seconds: where was it, how big was it, and how close to you. Terremoto is a fast, map-first earthquake tracker built on live USGS data. Open the app and the world's latest seismic activity is already on the map — color-coded by magnitude, with your position on it. Switch to the list to scan recent events at a glance, each with magnitude, location, time, and distance from you. Tap any event for the full picture on its own map: how…