Laramie Nelson, falsely accused of horse-stealing, is about to be strung up by a posse when a sudden lurch of his horse knocks down his would-be executioners, and he makes his escape. He soon comes upon another hanging posse and saves "Honest" Tracks Williams, accused of a long, long list of minor crimes, and…

Everyone's heard of it, but what does E=mc2 -- the world’s most famous equation -- really mean? And why did it change the world?With brilliant period recreations, NOVA dramatizes how an obscure young patent clerk, Albert Einstein, came up …

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19世纪，戴梅恩神父自愿前往莫洛凯岛照顾麻风病人的真实故事。

【与前作相比，新作增加到15个章节的内容】 闪电侠、戴尔和扎尔科夫博士从他们之前的太空探险中归来，却发现他们的敌人——冷酷无情的蒙戈星球——拥有了一种新武器:一束穿越太空的致命射线，它会对地球造成巨大破坏。地球唯一的希望是我们的英雄们再次起飞，在火星上阻止射线的来源...