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

Review: burnt out 
Sentiment: negative

Review: energetic and always surprising 
Sentiment: positive

Review: that does n't bring you into the characters so much as it has you study them 
Sentiment: positive


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