With a surface area more than twice that of Greater London's, A23a is the biggest iceberg on the planet, having calved from the Filchner-Ronne Ice Shelf in 1986. The frozen leviathan is now on the ...

After being anchored to the ocean floor for more than three decades, the world's largest iceberg has finally broken free and is now drifting in the open sea. According to the British Antarctic Survey ...

Nearly 40 years after breaking off Antarctica, a colossal iceberg ranked among the oldest and largest ever recorded is finally crumbling apart in warmer waters, and could disappear within weeks.

In what sounds like a potential plotline for Speed 3, one of the world’s biggest icebergs is on course to crash into a remote British island, threatening its wildlife and potentially altering its ...

A viral video has captured a breathtaking, massive iceberg floating off the coast of the Canadian island of Newfoundland. Although iceberg sightings in the area are not uncommon in the summer, climate ...

Earth's largest iceberg has run aground off the coast of South Georgia Island, a common rendezvous spot for large icebergs, new satellite images show. Measuring 1,240 square miles (3,460 square ...

One of the world's largest icebergs has begun moving through the waters of Antarctica after three decades spent immobile, according to the British Antarctic Survey. Satellite images revealed that the ...

NBC News' Tom Costello reports on an iceberg known by scientists as A23a, about a thousand feet tall and spinning in the area of the Antarctic known as Iceberg Alley. Tom looks into why it’s happening ...

The world's biggest iceberg, known A23a, is on a collision course with a tiny island in the South Atlantic, which is home to millions of seals and nearly half the world's population of king penguins.