SPACE - Has Curiosity made an 'Earth-shaking' discovery?

The Mars Science Laboratory team has hinted that they might have some big news to share soon. But like good scientists, they are waiting until they verify their results before saying anything definitive. In an interview on NPR today, MSL Principal Investigator John Grotzinger said a recent soil sample test in the SAM instrument (Sample Analysis at Mars) shows something 'earthshaking.'

http://phys.org/news272708413.html