1) The Rocky Mountains, also known as the Rockies, extend from Canada through the United States, offering stunning landscapes and outdoor recreational opportunities.

2) The naming of cyclones varies depending on the region. For example, cyclones in the Atlantic and eastern Pacific Ocean are named using a predetermined list of names.

3) The world's largest desert is the Antarctic Desert, covering around 5.5 million square miles.

4) Mountains are important water sources, as they capture and store precipitation, feeding rivers and supporting ecosystems downstream.