Ever had a blood test? Along with a value measured, there are also the normal max/min limits for that value. This implies that the body normally controls...
The universe is full of an infinite variety of complex systems, from the almost incredible universe itself to the tiniest one-celled creature in the ocean....
There has been considerable debate among scientists over the origin of Grand Canyon. We all agree it was formed by the removal of some 1,000 cubic miles...