How to Search for Life on Mars — The New Atlantis:

Despite what it says, NASA has actually made the decision not to look for present life on Mars, even though tools that could identify life have been available to the agency for twenty years. Even worse, NASA’s existing rovers operating on Mars are being directed to avoid areas most likely to harbor life, and its plans for future human exploration are being designed in a way that would minimize their exploratory capability.

What in the world is NASA thinking? And how can we get the agency back on the path to finding life?

A fascinating essay, and a kind of case study on how bureaucracies evaluate risk vs. reward.