Welcome to the website of Alan Walker, science writer

       Information and downloadable files on science and environment

• Popular science: downloadable chapters on several topics around a central theme.

• Guidebooks for identification of veterinary specimens; and for identification of mountain flowers.

• An Argument page of essays on: Ecosystems; Eye evolution; Expanding forests . . . 

• Work in progress: Trees for People, about their biology and how we relate to them.