The map not only show emergencies happening in the world. There is a list of recent emergencies below so you can keep track of what is going on. There is also an android app, to get notifications on the go.
The thing I like best about the map is that it not only shows natural disasters, such as fires, hail, earthquakes, and storms. The map also shows Things like biological hazards, major vehicle accidents, epidemic hazards, and unusual geological events.
The website has the objective to monitor and document all the events on Earth which may cause disaster or emergency. They are not trying to hide certain events from us, they are just informing us.