Word: earthly
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...Prime Directive: that there should be no interference with the internal affairs of other civilizations. (Given the frequency with which captains Kirk, Picard, et. al., violate it, however, the Prime Directive seems more like a Prime Suggestion.) Since human beings have yet to explore very far beyond Earth, pondering an interplanetary noninterference policy of our own may seem a little premature - at least until we've mastered warp drives and phasers...
...biologically reversible" - meaning we would be required to effectively wipe away our footprints and remove any possibility of contamination, by leaving behind nothing that could foster alien microbial growth. Such a policy would be especially necessary if we discover that life on Mars has emerged independently of life on Earth - what McKay calls a "second genesis" - as opposed to Martian life that arose through the exchange of meteorites between Mars and a hospitable Earth, a condition in which the two planets would share a tree of life and contamination would be less of a concern. If there really were...
...pictures of Earth from space...
...dirty lie” while listing grievances with coal as an energy source. As two of the activists held the banner, another questioned the speaker, CEO of Arch Coal Steven F. Leer, on the viability of coal as a solution to climate change. When moderator Daniel P. Schrag, an earth and planetary sciences professor and director of Harvard University Center for the Environment, asked the objector his name, the man replied, “coal kills.” Several audience members responded to this statement with applause. The interruption concluded when Schrag asked the Rising Tide representatives to leave...
...father asked me, 'Where on earth are you going in that?' " says Mayuka Watanabe, laughing. She is a 17-year-old high school student sporting a headband with a big ribbon and three pink roses. Her friend Miki Takahashi, 18, who takes her fashion inspiration from Cinderella, adds, "People look at me and sometimes even point a finger at me. Once a little kid on the train looked at me and exclaimed, 'Look, there is a fairy!' which was kind of embarrassing, but I didn't care because I just wear what I like." Sanae Nagamine, a 21-year...