Two billion years old—and its history might help jolt us into
action A great many people (probably more than half) in the
United States do not believe any of the scientific information
about human-generated greenhouse gases and their impact on
global warming. They seem to feel that the world is a big place
and that there’s no way mankind can change that great big world
in any significant manner. I strongly disagree with those
people. In recent weeks, I have been focusing on our planet’s
continued ability to provide longterm sustainability of the
human race. During that time, someone asked me two questions
that got me to thinking: Question #1: What caused the melting of
the glaciers that gave us the Grand Canyon and many other
canyons, etc.? My response. I do not know about the melting. But
after a little research I learned that the canyon has been there
long before there were humans on this planet. About 10,000 times
as long. (See facts below). Scientists report that life began on
our planet about 4 billion y