Introduction It is sometimes difficult to admit that you are (officially) a nerd, but I have a confession to make. I have collected dinosaurs on stamps for the last thirty years. Over 10,000 of these stamps have been issued across the world, and the vast majority of these issues are in my collection. One question that I am often asked is when the first dinosaur stamp was issued, which turns out to ...[Read More]
A Story of Fertilizer and the Colour Purple
Fig. 2.3. The image is taken from a painting by Robert Bruce Horsfall