阿根廷西北部的萨尔塔省，风跟一个穿着节日盛装的小姑娘玩了个恶作剧。
The wind makes mischief for a girl dressed in her festival best in Salta Province in northwestern Argentina.
塔特萨尔博士认为，转变到人类的飞跃产生已经很突然，或许由于几个重要的基因变化。 这就是为什么这个转变在化石记录里很难找到。
Dr. Tattersall believes the leap to humans may have been brought about very suddenly, perhaps by a few critical genetic changes, which is why the transition is so hard to trace in the fossil record.
利在阿根廷萨尔塔的一座教堂做志愿者，给学校的孩子们做午饭并在英语作业上帮助孩子们。
Leigh volunteers at a local church in Salta, Argentina, serving lunch to school children and helping kids with their English homework.
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