Take a 360-degree tour through Oman's 50-story-deep Majils al Jinn cave, hear photographer Stephen Alvarez talk about his rope-cam and watch it in action.
Meet the amazing animals of Congo's Goualougo: Wild chimps with no fear of humans, elephant families, shy gorillas, and more.
Sound off on Corsican separatism, wildlife conservation, and more.
This x-ray image of a man using an electric razor was cutting edge in 1941.
How do you model an extinct animal? Zoom In on our photo gallery and find out. Then check out field tales from the author and photographer.