Did you know that "megalith" means "big rock", which is certainly a good description of Stonehenge?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Aa
xAa : Hawaiian name for a type of lava flow with a surface that is broken into rough angular fragments which develop during cooling and loss of gas from pahoehoe flows.
Lake Tanganyika, the second-oldest and second-deepest lake in the world, could be in for some rough waters. Geologists have determined that the East African rift lake has experienced unprecedented warming...Read more