"Vacuum" is missing (vacuum of space for example). It should appear under "Other Hazards" on pages 24-25 and may include "Cold".
Also, "Zero-G" movement should be added.
Suggestion: the rules for Starvation on page 25 are incorrect. Starvation doesn't cause damage to the human body until you run out of fat storage. So, lower-strength characters with more fat could survive longer than higher-strength characters with less fat; one disadvantage of higher-strength. Working this into the rules somehow would be a bit more realistic.
You could change the Starvation section to the following, I have underlined the changes below ...
You must eat a ration of food at least once every day. The higher your Strength the leaner your body, and the faster you starve. After a number of days equal to [7 minus Strength] without food, you starve. When starving, you don’t heal damage (Strength) normally. You heal stress (other attributes) normally. You also suffer one point of damage per week after the first week. If you are broken while Starving, you die after another week without food. As soon as you have eaten, you are no longer starving.