There is nothing more important in life than sex. No, this is not the assertion of another frustrated male of the species displaying signs of sex mania nor, for that matter, an American political commentator, but a factual statement. Perhaps it would be more apt to say there is nothing more important to life, for--daily sustenance and self-preservation excepted--there is no instinct as strong as the one to reproduce and continue one's line. Battle of the Sexes, which accompanies the BBC TV series of the same name, surveys all the weird and wonderful ways the inhabitants of Earth go about "doing the business," bringing together a remarkable wealth of information for the layman with an interest in natural biology. There is a tendency to see our own reproductive efforts as altogether different from those of the "natural world.
