The explanations, particularly in the thorny field of quantum physics, are excellent, and the selectionofsubject matter skilfully winnows a vast field.
It would include a range of A-levels, with an expectation that pupils would study a less narrow selectionof subjects - such as studying sciences with an arts subject.
He said there was no guarantee that introducing a specific genetic change would have much impact in a population which was subject to the effects of many other natural selection processes.
The site also links to a wide selectionof Halloween-related web pages, covering All Hallows' Eve subject matter from ghost stories to costumes to "mystic games" like a virtual Ouija board and a tarot card reading.