This week, NASA announced findings of potential biosignatures on Mars. Does that mean there's proof that there was once life on Mars? In this edition of Weekend One on One, Dr Micheal Tice, geology professor at Texas A&M University, who's involved in the ongoing research project, explains what the findings mean.

This week, NASA announced findings of potential biosignatures on Mars. Does that mean there's proof that there was once life on Mars? In this edition of Weekend One on One, Dr Micheal Tice, geology professor at Texas A&amp;M University, who's involved in the ongoing research project, explains what the findings mean.

INTERVIEW: Is there life on Mars? New research seems to show there was, once.

Go behind the headlines and hear what the newsmakers themselves have to say. In this weekend series, we’ll be getting experience, analysis, and understanding in extended interviews with the people who really know what’s going on.

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INTERVIEW: Is there life on Mars? New research seems to show there was, once.

INTERVIEW: Is there life on Mars? New research seems to show there was, once.