QUESTIONS

Q : Are there any thermal energy extraction/processing/distribution installations in place at any of the Earth’s active volcanos? Tony Johnston, Wigan.

Q : Did the idea of Mrs Brown come from Old Mother Riley? K. Welland, Walsall, West Mids.

Q : Could steam engines refill from water troughs while on the move? A. E. Bully, Poole, Dorset.