Trees are tall. Humans, relatively speaking, are not. And we're not the most agile climbers in the animal kingdom, either. But we are crafty, and we can out-think even the most wizened redwood. But how do you do so when all you've got is a pencil, a mirror, or a smartphone? In the first installment of a new series powered by Q&A site Stack Exchange, we're taking the question to the crowd. More »