The Coordinating Committee for Earthquake Prediction brings together representatives from around the world annually to share data and evaluations on this subject. They have shortlisted a range of detectible precursors that are currently being investigated to see if they can be used to accurately predict an impending earthquake; including seismic waves, radioactive emissions, electromagnetic anomalies, satellite observations, tectonic trends, and even animal behaviour. The latter has been a noted feature of earthquakes previously; the 2009 L’Aquila earthquake in Abruzzo, Italy was marked with a disappearance of common toads days before the earthquake. But more quantitative features were simultaneous observed also, Giampaolo Giuliani, a local technician noticed rising levels of radioactive radon emissions from four radometer stations in L’Aquila. While it may seem futile, for many studying earthquake data there are a number of precursor events that happen before earthquakes which are of interest to scientific bodies and universities dedicated to earthquake prediction and research.