Geographer: My favorite science experience was climbing a 44-meter tall tower to access tree canopies. I had a ,000 instrument strapped on me to measure how light changes from the ground to the top of a forest. I have other favorite experiences, of course. I enjoyed flying in a small plane less than 500 meters over the Amazon rain forest, renting a small boat in Brazil where we saw sloths and pink dolphins, and building my own 20-meter tower to access tree canopies, then climbing it.