There is no intelligent life on this planet. 
( There ( ( is ( ( no ( intelligent life ) ) ( on ( this planet ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT no) (JJ intelligent) (NN life)) (PP (IN on) (NP (DT this) (NN planet))))) (. .)))
There isn't intelligent life on Earth.
( There ( ( ( is n't ) ( ( intelligent life ) ( on Earth ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (RB n't) (NP (NP (JJ intelligent) (NN life)) (PP (IN on) (NP (NNP Earth))))) (. .)))