Discovered: Curiosity will have to dig deeper to find signs of Martian life; how our unstable universe could be replaced; new scorpion found near Tucson; our ape ancestors got drunk, too.
NASA's Mars Curiosity rover drilled into a rock and found that it contained a clay-like material. That's the news. The implication is much larger: Mars may once have had an environment hospitable to life.
A note to @MarsCuriosity's 1,270,220 followers on Twitter: NASA's intrepid rover is a she. The women behind her massively popular social media presence confirmed today that "she" is the proper pronoun for referring to the Mars explorer.
NASA was pleased to learn yesterday that the rover they spent considerable time and expense to drop on a completely different planet can, in fact, rove.
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