diff --git a/src/components/Timeline.jsx b/src/components/Timeline.jsx
index 11b9d87..61e91aa 100644
--- a/src/components/Timeline.jsx
+++ b/src/components/Timeline.jsx
@@ -57,12 +57,6 @@ class Timeline extends React.Component {
     if (nextProps.dimensions.trackHeight !== this.props.dimensions.trackHeight) {
       this.computeDims()
     }
-
-    if (hash(nextProps.app.selected) !== hash(this.props.app.selected)) {
-      if (!!nextProps.app.selected && nextProps.app.selected.length > 0) {
-        this.onCenterTime(nextProps.app.selected[0].datetime)
-      }
-    }
   }
 
   addEventListeners () {
diff --git a/src/components/presentational/Map/Events.jsx b/src/components/presentational/Map/Events.jsx
index f2fe193..588d4c0 100644
--- a/src/components/presentational/Map/Events.jsx
+++ b/src/components/presentational/Map/Events.jsx
@@ -21,6 +21,11 @@ function MapEvents ({
     return [x, y]
   }
 
+  function handleEventSelect (e, location) {
+    const events = e.shiftKey ? selected.concat(location.events) : location.events
+    onSelect(events)
+  }
+
   function renderBorder () {
     return (
       <React.Fragment>
@@ -135,7 +140,7 @@ function MapEvents ({
       <g
         className={`location-event ${narrative ? 'no-hover' : ''}`}
         transform={`translate(${x}, ${y})`}
-        onClick={() => onSelect(location.events)}
+        onClick={(e) => handleEventSelect(e, location)}
       >
         {renderLocationSlicesByCategory(location)}
         {extraRender ? extraRender() : null}