The largest iceberg ever recorded is Iceberg B-15, which calved from Antarctica's Ross Ice Shelf in March 2000. This iceberg measured approximately 4,250 square miles—nearly the size of Connecticut.

A vast desert, filled with billions of tons of sandy soil and an area spanning four countries, is the world's largest continuous sand desert.

Explore the World's Largest Underwater Cave January 17, 2018 - The world's longest underwater cave has been discovered near the city of Tulum, on Mexico's Yucatán Peninsula. The new discovery ...

The Empty Quarter, or Rub' al-Khali in Arabic, is one of the world's largest deserts. Spanning nearly 650,000 square kilometers -- mainly in Saudi Arabia -- it dominates the Arabian Peninsula ...

In the coldest and most remote parts of the world, far from people and cities, glaciers quietly shape our planet. These huge blocks of ice may not make news every day, but they play a big role in ...