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"This roadmap outlines research pathways to determine whether Mars could be warmed with non-biological methods. It does not presuppose that warming Mars is desirable; its purpose i…

Our particle screening dashboard is online! Read the article below to learn how you can use TerraScreen ( https://github.com/mars-terraforming-research/TerraScreen ) to calculate t…

A model built using data from the Curiosity rover suggests wet periods were rare.

DeBenedictis, E.A., Kite, E.S., Wordsworth, R.D., Lanza, N.L., Cockell, C.S., Silver, P.S., Ramirez, R.M., Cumbers, J., Mohseni, H., Mason, C.E., Fischer, W.W., & McKay, C.P., The …

The article quotes Prof. Troian as saying, "JPL acted honorably throughout. They did the right thing and filed the right report. That part of the system worked well. ... My complai…

Giving Mars an atmosphere that you or I could breathe is science fiction. It would require designer microbes, or enormous energy input. Extending life beyond Earth - establishing a…

U.S. abilities to defeat Syria's air defenses are central to a debate over whether to intervene in the 2-year-old civil war. Electronic methods to disable enemy air defense systems…

My basic gripe with Bell-curve arguments against female genius is that at the high end, in the exponential tail, fine-tuning is needed to explain why a non-negligible fraction of p…

Geologist here. Earth's thermal evolution is unsolved decades after we figured out the stars. The Sun's temperature adjusts to energy production and loss on a 10^6 yr timescale (sc…

I am a postdoc working on planetary habitability. This arxiv paper is a mesh sieve masquerading as a boat. Complexity's rise is a messy business [1]. There's some evidence for stea…

Send people when there's a coherent plan for them to do something useful. Not before. (1) Oliver Morton: "The fact that there are plenty of people who might volunteer ... does not …

[3] http://www.nasa.gov/mission_pages/msl/multimedia/pia16230.ht...

The landing created an extensive debris field [1]. For example, the descent stage energetically disassembled on impact with 100+ kg of unused propellant still on board, as planned …