My ecology unit started in an unusually urgent manner—with a call to the doctor.

"911, this is an emergency! Let's get some vitals on the patient, stat!" Now we weren't in an emergency room, nor had any student collapsed. Instead, we were in my classroom, my students were the doctors, and the patient was planet Earth. For the next few weeks, my students set out on a journey to take the Earth’s vitals and diagnose our planet’s condition.   

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