Review: presents visceral and dangerously honest revelations about the men and machines behind the curtains of our planet . 
Sentiment: positive

Review: for reverence and a little wit 
Sentiment: positive

Review: energetic and always surprising 
Sentiment: positive

Review: unimaginative and 
Sentiment: negative


Review: costner 's warm-milk persona is just as ill-fitting as shadyac 's perfunctory directing chops , and