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.
Conservation efforts to protect endangered corals in the Caribbean focus on the areas that have the largest variety of species. Ann Budd of the University of Iowa and John Pandolfi of the University of...Read more