Sand and other sediments can be transported by rivers and floods, but what kind of forces—and how much water—would it take to move thousands of cubic miles of sand from one side of a continent to the other?

Almost all behavioral experts would agree that good communication is key to the survival of a healthy relationship. This principle also holds true in the plant world.

Using satellite photos in conjunction with geochemical analyses, a team of researchers has proven the existence of a now-buried lake and river system that once operated in the middle of the Sahara desert in North Africa.

Is a "god of the gaps" at the root of Intelligent Design (ID) and creation science? This informal logical fallacy occurs when a given mystery (or gap) that science has not solved is "explained" with reference to divine activity: "God just made it work out, somehow," some theists might say.