Ernst Haeckel (1834 – 1919) was what we call a renaissance man. He was a professor, biologist, philosopher, physician, naturalist and artist. His contribution to biology, evolutionary theory and art is still mind-boggling; we owe a great deal of biological understanding and terminology to him. He was a great promoter of Darwin's theory of evolution, ...

Tree of life – custom drawing: This is the third post in the series of my custom drawings. This time, it was a custom "tree of life" for my sister. She had a whole spare wall in the cabin up in the mountains... Again, as in all custom drawings I do, there are some elements ...