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?
Refraction
xRefraction : Refraction is the deflection, or bending, of the ray path of a seismic wave caused by its passage from one material to another having different elastic properties; or the bending of a tsunami wave front owing to variations in the water depth along a
Air pollution can get high in the atmosphere – high above most of the clouds you see in the sky. Scientists are finding air pollution more than 20 miles above the surface of the Earth. That’s in the stratosphere...Read more