By Anthony Aveni
By Paul Martineau
By Gabriele Kühl, Christoph Bartels, Derek E.G. Briggs, and Jes Rust
By Rod Pyle
By Ian Tattersall
By Gilbert Waldbauer, Illustrations by James Nardi
By Sean Carroll
By Jim Bell
By edited by Diana Donald and Jane Munro
By Douglas Palmer, illustrated by Peter Barrett
By Theodore Cross