some science i do not get:
1. What will happen to the bodies of the "settlers" when they are living in an environment with barely more than one third Earth gravity? Its one reason why I think permanent settlement on Mars is impossible, the human body needs close to Earth gravity over the long term.
2. Those "drones" were basically tiny helicopters but there is almost no air pressure on Mars. On Earth a helicopter cannot fly at very high altitudes and when people are stranded on mount Everest it is often difficult or impossible to send a rescue helicopter, the air is too thin (birds cannot fly that high either).
3. That guy whose suit sprung a leak? Why did he almost lose an arm? Why would exposure to Mars kill an arm?