We’re not about four seasons, we’re about water and drought and heat and fire.”But why do the fagus and other plants colour their leaves in autumn? Why do some trees lose their leaves, but others ...

Four faults were detected in a safety system for a train involved in a fatal crash in mid-Wales, investigators have said.

Four faults were detected in a safety system for a train involved in a fatal crash in mid-Wales, investigators said. Hoses ...