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Join scientist Doug Emlen on his quest to find out why an elusive type of beetle grows weapons that are enormous for its body size.What does it take to be a scientist in the field? Doug Emlen is a scientist. He studies beetles.Specifically, he studies the evolution of beetle weapons--how their horns and armor change to better suit them in different environments. This book starts with a mystery: Doug wanted to know why a particular type of beetle developed a massive evolutionary weapon. He wanted to know how these changes happened and what advantages these enormous weapons gave the tiny dung beetles. So, he went to visit.Part travel diary and part scientific exploration, Beetle Battles takes you deep into the South American rainforest to monitor beetles in their own habitat.