Does anyone know of a reasonably priced (i.e. not hundreds of pounds) encyclopedia suitable for a 13 year old?
DS has a very inquisitive mind and we would love him to have a really meaty reference book to delve into. All the children's encyclopedias seem to be aimed at 7 - 12 year olds, or KS2, then it jumps to ones more suitable for A levels and beyond. Ideally it would be a general encyclo-whatsit (sorry struggling to spell it again) or a science / nature based one.
Any ideas?! thankyou!