Heavy Lifting Doesn't Need To Be Heavy

Exploration Is Wired Into Our Brains. If We Can See The Horizon, We Want To Know What's Beyond.

Only A Large-volume Market Like Space Travel Can Attack The Barrier Of High Costs.

Climate Has Been Changing For Billions Of Years.

Globalisation Means Many Other Countries Are Asserting Themselves And Trying To Take Over Leadership. Please Don't Ask Americans To Let Others Assume The Leadership Of Human Exploration. We Can Do Wonderful Science On The Moon, And Wonderful Commercial Things. Then We Can Pack Up And Move On To Mars.

Mars Has A Bit Of Air Pressure; Maybe We Can Build Up That Atmosphere To Be A Bit More Accommodating To Humans.