Here is a quote from a Nasa Scientist:
"It's a big day for us - it's a kind of crowning moment of 10 years of hard work - where we report there is methane in the atmosphere and there are also organic molecules in abundance in the sub-surface," commented Curiosity project scientist Prof John Grotzinger.
They just can't locate the exact location !
Nasa Chief Charles Bolden:
"Mars is the likely place in our solar system that has life at one time and my have life now and we feel can diffidently sustain life" !.