Top predators are necessary for every healthy ecosystem. They don't tend to be vicious -- just doing their job, pruning the school or the herd, feeding their families. Sharks and wolves and lions can be affectionate, playful and caring, even across species lines.
Josh Mitteldorf, a senior editor at OpEdNews, blogs on aging at http://JoshMitteldorf.ScienceBlog.com. Read how to stay young at http://AgingAdvice.org.
Educated to be an astrophysicist, he has branched out from there to mathematical (more...)