1 Table of Contents: “... in the past century -- Variability of the Sun -- The Earth’s heat balance and the greenhouse effect -- CO2...”

2 Table of Contents: “... -- 6. The Earth's heat balance and the greenhouse effect -- 7. Energy and climate in the 21st century...”

3 “... to a human Mars mission, including life support consumables, radiation effects and shielding...”

4 “... support consumables, radiation effects and shielding, microgravity effects, abort options and mission...”

5 “... support, radiation, and low-gravity effects, getting there and back, in situ resource utilization...”