Pre-quake changes seen in rocks

Scientists have made an important advance in their efforts to predict earthquakes. A team of US researchers has detected changes in rocks that happened hours before tremors. They used sensors lowered down holes drilled into the quake zone.
Referring to the 12 May Sichuan quake, which claimed thousands of lives, Dr Niu told the BBC: "What happened in China was that a lot of children were killed in school in their class; so if we can predict earthquakes even by a few minutes, we can help then to evacuate the classroom."
Read the complete article from the BBC here.