Mission to Mars: McMaster researcher helping write the astronauts’ guide
by from on (#4BAAA)
![B88629426Z.1_20190318105121_000_G3LH2UHN](http://media.zuza.com/0/d/0df89965-93ff-490f-9eac-ec1ccc16ed06/B88629426Z.1_20190318105121_000_G3LH2UHN.3-0_Content.jpg)
McMaster University scientists explore how to do science on Mars. How should astronauts choose the best rock samples to be able to test if the planet ever had life on it?