The reason being it just keeps hitting us with difficult situations in every environment it explores, where each time the situation looks pretty grim. If we are open to what the director is saying, and not just dismissing it all like some damn oil-man, we will have to admit that it IS a crying shame what our presence has really meant on this earth. This film deserves a considerably higher score than what it's been given.For its gritty nature I would definitely recommend this film to anyone concerned about the environment and our future here on the planet.At least we might last a little longer than some of those poor fish in the lakes...