Collyer's A-level Geology students recently visited the Geology Department at the University of London, Royal Holloway. Invited by Dr Nic Scarselli, the group heard an introductory talk about Earth ...

Predicting when a volcano might erupt is very difficult. Some volcanoes erupt almost constantly, such as Kīlauea on Hawaii, but others may have gaps of hundreds of thousands of years between eruptions ...