While there are different types of deserts, they all share the common characteristic of receiving very little precipitation.

Here are some examples of deserts considered among the driest:

* Atacama Desert (Chile): Often cited as the driest place on Earth, with some areas receiving less than 0.004 inches (0.1 mm) of rain per year.

* Namib Desert (Namibia and Angola): Known for its coastal fog and incredible sand dunes.

* Antarctic Polar Desert: The largest cold desert, with minimal precipitation and extremely low temperatures.

Let me know if you'd like to learn more about any specific desert!