MOST VIEWED PHOTO GALLERIES

The impressive fortifications and defensive strategies used during Spain’s dramatic history of conflict, from the Middle...

Discovering how France constructed ingenious fortifications, on a massive scale, to defend itself against attacks from the east.

Two fatal aviation tragedies occurred involving the 737 MAX killing everyone on board.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft...

Lethal rockslides wreak havoc on the CPR and a three-kilometer load of potash; the Polar Bear Express enables a father-son...

Railroad crews haul a massive 210-ton reactor across the country as track crews scramble to stay one step ahead of the load.

In Brazil, David meets daredevils, artists, explorers and athletes who unite to help execute an audacious leap of faith that...

In Japan, David explores the concept of mastery by meeting with people who spend a lifetime refining a single skill.

It’s hard work being the world’s biggest dragon on Rinca island. Competition is so fierce, and the global temperature...

Saudi Arabia’s wildlife thrives in extreme conditions, from deadly scorpions and raucous baboons to charming chameleons and...

Every year, the number of shark attacks in Hawaii doubles in one specific month. Scientists try to solve the mysterious...

Charleston, SC is renowned as the “jewel of the south”, but during 2 summers, it’s known for something different - 5...

Best of compilation of Photo Ark S1, which followed National Geographic photographer Joel Sartore on his globetrotting quest...