Almost 300 S5 and S6 pupils from across Aberdeen and the Shire attended a lecture being given by an award winning writer, broadcaster and medical doctor.
Dr Ben Goldacre, who is the Bad Science columnist at The Guardian and appears regularly on radio and television, is giving the University of Aberdeen's Annual Christmas Lecture at Foresterhill.
Entitled Quacks, Hacks and Little Magic Pills, his talk is expected to be a lively look at good and pseudo science.
Professor Maggie Smith, Chair in Microbiology, has organised the lecture. She said: "The University of Aberdeen is delighted that Dr Ben Goldacre agreed to deliver our Annual Christmas Lecture.
"We are always keen to bring in speakers who do not fit the scientists stereotype.
"These lectures are intended to stimulate senior school students whose aspirations may lie in medicine and biomedical sciences.
"And I always hope that these lectures will encourage young people to view science as a worthy career."
The talk, which is talking place at the Foresterhill campus, is being attended by pupils from Aberdeen Grammar School; Albyn School for Girls; Hazlehead Academy; Northfield Academy; St Machar Academy; St Margaret's School for Girls; Banchory Academy; Banff Academy; Peterhead Academy; Turrif Academy; Westhill Academy; Keith Grammar School and Speyside High School in Aberlour.