The Economist has a leader “For life, not for an afterlife“, in which it argues that Elon Musk’s stated motivation to settle Mars – making humanity a multi-planetary species less likely to go extinct – is misguided: “Seeking to make Earth expendable is not a good reason to settle other planets”. Is it misguided, or is the Economist‘s reasoning misguided? Continue reading
Are we overprotective of Mars? That is the claim made by Alberto G. Fairén and Dirk Schulze-Makuch in a recent commentary in Nature Geoscience. They argue that current planetary protection policies that try to prevent bodies in the solar system from becoming contaminated by Earth-life are too costly, inhibit scientific exploration and might actually be unnecessary because of natural contamination. How much value does a pristine non-terrestrial environment have?