Falling in Love for Scientists May Mean an Almost Unnatural Selection WHO is Glauco Machado? WHO is Mark Siddal? WHO is Marlene Zuk? WHAT animals do they focus on? WHAT are Harvestmen? WHAT species of Harvestmen lives in North America? WHERE did Mr. Machado first study Harvestmen? WHERE does he work now? WHEN did he start studying them? HOW did he become interested in arthropods? HOW many animals can a scientist study? WHY do scientists often choose such strange creatures to study? WHY do they often become enamored with their chosen animal? Related: our lesson "Backyard Science: Tallying Local Species to Learn About Diversity" and our Student Opinion question "Given Unlimited Resources, What Scientific or Medical Problem Would You Investigate?"