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.

by Brian Thomas, M.S. and Christine Dao*

British lawmakers have formally approved the use of animal-human hybrids for stem-cell research after months of bitter debate between Prime Minister Gordon Brown and a group of secular scientists against religious leaders and pro-life advocates.