Do you know why volcanic ash is a problem for air travelers?
Did you know that Huizilopochtli was dressed with hummingbird feathers on his head?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Ooids
xOoids : Small (< 2 mm), spheroidal, layered sedimentary grains, usually composed of calcium carbonate, but sometimes made up of iron- or phosphate-based minerals.
Near the Earth’s equator is where you could find some of the warmest places on Earth. But it wasn’t always like that. It used to be cold at the equator, so cold that ice formed on land and in the ocean....Read more