- Bliv medlem
-
Log ind
Du er ikke logget ind
Log ind Opret dig - Kurv
Du er ikke logget ind
Beskrivelse
Scientists estimate that each year there are several million earthquakes throughout the world. Some are so small that they are never detected. Others are so large that they set off a chain of aftershocks and tsunamis. Read about these terrifying events to learn what causes them and how scientists detect them.
