In nineteen ninety-six, a NASA study announced the discovery of what appeared to be the mineral remains of very simple forms of life in the Allan Hills meteorite.
VOA: special.2010.07.28
Swan says his early mentors instilled in him a simple environmental ethic that has guided him through life: "That was that at the end of our expeditions, we would always leave wherever we went,clean and tidy, take away our garbage, take away everything, just leave our footsteps."
VOA: standard.2009.12.10
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