The Arctic is warming faster than any other region on Earth due to climate change. Rising temperatures cause the sea ice to melt earlier in the spring and form later in the fall, reducing the overall ice cover. This loss of ice threatens Arctic wildlife like polar bears, seals, and walruses that dep

The world’s largest cave system is Mammoth Cave in Kentucky, USA. It stretches over 650 kilometers (400 miles) of explored passageways, making it the longest known cave system on Earth. Mammoth Cave is famous for its vast chambers, underground rivers, and unique rock formations. This cave s

Surprisingly, there are a few countries in the world that have no rivers at all. Examples include Saudi Arabia, Malta, and Vatican City. These countries rely on other sources of water, such as underground aquifers, rainfall collection, or desalination plants to meet their needs for drinking, agricul

There are several famous places in the world where two oceans or seas meet but their waters don’t immediately mix, creating a striking visible boundary. One well-known example is where the Atlantic Ocean meets the Arctic Ocean near Greenland. The difference in temperature, salinity, and densit