Contributing photographer Rebecca Latson continues last month’s theme of fun facts you can learn about photos you capture of things you see in a national park. Rebecca also provides tips on how to make those interesting shots even more interesting to your viewers.

After the National Park Service recruited Dr. Donna Shaver to build a sea turtle science program at Padre Island National Seashore, a role that saw her bring the program to international prominence, the agency now appears to be squandering her success and hoping she'll retire.

When you look at photos you’ve captured during a visit to a national park unit, do you notice one or more of your shots clearly showing a division of light and dark, or energy and calm, or two different colors, or two different textures? Contributing photographer Rebecca Latson sees this phenomenon in many of her own images, calling it the “yin and yang of a composition.” In this month's column, Rebecca provides examples of this yin-yang concept and how you can look for it in nature with your camera.