"This interesting and informative text, edited and largely written by Bjorn (emer., Lund Univ., Sweden), an expert in many aspects of the photobiology of plants ... . The treatment of plants and animals is balanced, and useful comparisons and evolutionary relationships are discussed for photoreceptor molecules and processes. ... Each topic gives sufficient background for non-experts to gain an appreciation of the subject matter. ... Summing Up: Recommended. Upper-division undergraduates through professionals/practitioners." (L. C. Davis, Choice, Vol. 52 (12), August, 2015)