A scientist walks along the edge of a melt pond in the Arctic Ocean to take a water sample. My eye was immediately drawn to the strong landscape composition made by the ice “island” in the melt pond. I anticipated the scientist’s route and started shooting as she walked into the frame. Photo credit: Woods Hole Oceanographic Institution, Chris Linder. Nikon D2Xs, AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED. Exposure: 1/250 sec., ƒ/11, ISO 100. From the polar regions to tropical rainforests, I have visited the literal ends of the planet during my 20-year career as a science and conservation photographer. Regardless of the subject matter or location, my mission on each assignment is the same: Use photography to educate the public...