Watch Now: Popular videos from the past week you may have missed

Fighting what Greece's prime minister has called "natural fury without precedent," firefighters continued their response on the Greek island o…

Trees and other debris could be seen flung through the air as a tornado touched down near Sycamore in Illinois on August 9.

Multiple fire whirls, or firenados, swirl inside the Dixie Fire at Rattlesnake Peak in California, as viewed in a timelapse from an infrared c…

Astronauts and cosmonauts compete in Olympic-style events aboard the International Space Station.

Firefighters and volunteers came together to battle a wildfire raging out of control in Tizi-Ouzou, Algeria, on Aug. 11. At least 69 people ha…

Venice’s iconic St. Mark’s Square was largely underwater on the night of Aug. 7, after the city’s flood defense system failed to protect the area.

Turkish Gendarmerie soldiers rescued a dog and her puppies from the backyard of a house damaged in wildfires in southern province of Mugla.

A wildlife ranger captured amazing footage of an endangered basking shark as it swam along next to him. Craig Nisbet, 42, spotted a shark fin …