Only ¼ of the Sahara Desert is sandy. When you think Sahara, you’d probably think of something out of The Lion King or National Geographic: stretches of dry, barren sands. However, this is not the case. One of the fun facts about the Sahara desert is that it’s hardly made up of sand! Most of it is covered in gravel with mountains and oases.
100 Mind-Blowing Barren Facts
Male gentoo and Adelie penguins “propose” to females by giving them a pebble. These are precious because the penguins use them to build their nests, and they can be hard to find along the barren Antarctic shoreline. If the female accepts the pebble, the pair bonds and mates for life.