What if you only had a day or two, to spend in Yellowstone National Park? Where would you go? What would you photograph? If you decide to travel the park’s 142-mile Grand Loop Road, a figure-eight shaped route through the park interior, you’ll see (and photograph) plenty. Contributing photographer Rebecca Latson gives you an idea of what you might capture with your camera.

On a recent trip to Tennessee, I lost count of how many people told me the same strange and unusual thing about Great Smoky Mountains National Park. If you stacked up all of the park’s salamanders against its roughly 1,900 black bears, the salamanders would weigh more. Or was it salamanders versus all of the mammals and birds, or even all the wildlife?

To time how fast a sprinter runs, you just need a stopwatch. To time how fast magma moves, you need to know a little bit about chemistry.

What if you only had a day or two, to spend in Yellowstone National Park? Where would you go? What would you photograph? If you decide to travel the park’s 142-mile Grand Loop Road, a figure-eight shaped route through the park interior, you’ll see (and photograph) plenty. Contributing photographer Rebecca Latson gives you an idea of what you might capture with your camera.