Survival of the fittest may seem like a logical explanation, very scientific, etc., but the fact is that everything needed for the support of humankind was put here when this earth was created. The earth is full, there is enough and to spare. The earth is the Lord's and the fullness thereof, etc.
So now we should all be afraid because some scientists tell us that we should be?
In 1965 when I graduated from high school, a scientist came from the University of Montana to talk to our high school class and warn us that there would not be enough food in America by 1984.
So now we are in 2001 and farmers are still going broke because there is such a surplus of farm products that they cannot make enough money to stay in business.
Logging had to be shut down. Trees need to burn in forest fires instead of being sawed up for lumber.
Scientists are the most hysterical people in existence. They have to be. Their mathematics indicates that the universe will contract to a single point and then explode. My own opinion is that if they did their algebra correctly, they could overcome this terrible fear.

Robert B. Winn