Fern fern ("Onoclea sensibilis"). Giant water fern ("Salvinia molesta") is one of the world's worst aquatic weeds. The important fossil fuel coal consists of the remains of primitive plants, including ferns. Ferns have been studied and found to be useful in the removal of heavy metals, especially arsenic, from the soil. Other ferns with some economic significance include: The study of ferns and other pteridophytes is called pteridology. A pteridologist is a specialist in the study of pteridophytes in a broader sense that includes the more distantly related lycophytes. Pteridomania is a term for the Victorian era craze of fern collecting
The Secret Life of Plants Italy during the Second World War The book includes summaries of the life and work of 20th century scientists Jagadish Chandra Bose and Corentin Louis Kervran as well as 19th century scientist George Washington Carver. The book includes experiments on plant stimuli using a polygraph, a method which was pioneered by Cleve Backster. Parts of the book attempt to disparage science, particularly plant biology, for example by claiming science is not concerned with "what makes plants live", in order to promote its own viewpoint that plants have emotions. The authors further say the authorities are unable to accept that emotional