NASA will keep trying to revive the silent Mars rover Opportunity through January
"NASA will continue its current strategy for attempting to make contact with the Opportunity rover for the foreseeable future"
US Marines want non-lethal laser weapon that shouts at people a kilometer away
The laser could be tuned and scaled to produce a feeling of intense, unbearable heat on human skin without causing lasting harm
Sponges from Mars? Study suggests water on the red planet could support life
Although the current strategy is to search for signs of ancient life on Mars, current life should be detectable too if present
