In honor of the Fourth of July, we peek into history to track the evolution of the American Flag.

These shocking images offer viewers a deeper look at the World Cup, past the fans and the trophies to the tournament's dark side.

Mount Nyiragongo is a deadly stratovolcano that's known for its 10,000-foot lava lake and potential for disaster.

Here's a history of doughnuts in the United States to celebrate National Doughnut Day, the sweetest holiday of the year.

Filled with religious shrines and one of the world's tallest Hindu statues, the Batu Caves are an important — and astonishingly beautiful — religious site in Malaysia.

Here's why rainforests are so fascinating — and vital for our survival.

To commemorate Lucky Penny Day, we uncover the lengthy (yet intriguing) history of the American penny, which was first created in 1787.

The sinkholes of the Yucatán Peninsula are full of treasure: incredible dives, Maya artifacts, ancient human sacrifices, and the most unbelievable sight of all — an underwater river.

Villa Epecuén was a thriving resort town in the 1970s, but after being flooded by saltwater, the city is now little more than concrete ruins.

Cockroaches, caterpillars and blood-sucking bugs that live in your bed -- these seven creepy insects are guaranteed to give you nightmares.

Created by pouring molten aluminum into an ant colony, artists uncover realistic, bizarre anthill art molds.